[[quoteright:289:http://static.tvtropes.org/pmwiki/pub/images/1628bf6a646682356630ec9026b8aa29.jpg]]
[[caption-width-right:289:''Fear is the mind-killer'']]

->''Arrakis... Dune... desert planet.''

The first book in a popular series of ScienceFiction novels, written by Creator/FrankHerbert, it was rejected twenty times by various publishers before finally being published in 1965 by Chilton, a publishing house best known for its [=DIY=] auto repair guides. Dune is a HugoAward, NebulaAward and SeiunAward winner.

The novel is set approximately 19000 years in TheFuture, in a [[TheEmpire galaxy-spanning empire]] [[FantasyCounterpartCulture loosely based on the Holy Roman and Ottoman Empires]], ruled by [[FeudalFuture feuding nobles]], arcane religious sects, and Byzantine corporate monopolies.

Much of the action throughout the series takes place on the eponymous planet, Arrakis, commonly called Dune by the native Fremen. Arrakis is a [[SingleBiomePlanet desert planet]] largely populated by the nomadic, xenophobic Fremen and inhabited by giant {{sandworm}}s that destroy anything caught out in the open, and would be of little interest to the rest of the galaxy if not for one thing: it is the only known source of "[[SpiceOfLife Spice]]", an all-purpose chemical that [[SuperSerum triples the human lifespan]], makes it possible for females (and some few males) to [[HigherUnderstandingThroughDrugs transfer ancestral memories]] to one another, unlocks or enhances the capacity of humans for [[JunkieProphet telling the future]], and therefore makes FasterThanLightTravel possible in a culture where computers have been made illegal by religious fiat--all while being ferociously addictive.

As the story opens, the Atreides family have just gained control over the Arrakis fiefdom from their longtime rivals, House Harkonnen--but this turns out to be [[ThePlan a cunning plan]] by the Harkonnen and the Emperor to eliminate House Atreides, whom the Emperor has come to see as a threat but cannot move against directly. [[FalseFlagOperation Wearing the uniforms of the Harkonnen,]] the Emperor's undefeatable Sardaukar stormtroopers assault the Atreides compound on Arrakis and destroy it, leading the way for the Harkonnen to retake the planet and capture Duke Leto Atreides, who dies in a failed attempt to [[TakingYouWithMe take the Baron with him.]]

Leto's fifteen-year-old son Paul Atreides, sole heir to the family line, escapes into the desert with his mother Jessica (pregnant with his sister) and takes refuge with the Fremen, where, upon adopting their ways and religion, he becomes the [[YouAreTheTranslatedForeignWord Kwizatz Haderach]], a long-awaited [[MessianicArchetype Messiah]] with the power to see into the future. Taking the name Muad'dib (a type of desert mouse on Arrakis, whose name means "he who teaches manners" in Arabic), he unites the Fremen tribes into a jihad that eventually defeats both the Harkonnens and the Imperium, and Paul declares himself Emperor.

The story is steeped in Arabic language and culture; it is implied that, in the distant future in which the books are set, Western and Eastern culture and religion have blended together into a pseudo-homogeneous whole. Religions such as "Mahayana Christianity" and "Zensunni" are referred to though not explicitly described, and many Arabic words have found their way into the standard language spoken by the people of the Galactic Empire (an extensive glossary is included in the first novel, without which many readers might find it incomprehensible). The Bene Gesserit sisterhood, an order of philosopher-nuns that considers itself the guardian of human civilization, extensively manipulate various religions over a scale of thousands of years in order to protect their agenda. Paul Atreides, through his actions, effectively creates a religion of his own, with effects that reverberate throughout the millennia.

''Dune'' has been [[TheFilmOfTheBook adapted into movie form]] twice:

* From the early 1970's on, attempts were made to produce a theatrical film. Cult director Creator/AlejandroJodorowsky (known for incredibly bizarre films such as ''ElTopo'' and ''TheHolyMountain'' came to the project after having a bizarre dream almost identical to the broader plot of the first novel and then hearing about a book of almost exactly the same story. Convinced that there was something more here he resolved to make '''a movie based on his dream,''' with bits of the book itself thrown in (that's not hyperbole, that's his stated agenda. [[WhatCouldHaveBeen Sadly, and inevitably, it fell apart.]] The 2014 documentary ''Alejandro Jodorowsky's Dune'' is a look into what might have been. The producers turned to a hot new director who had been considered for ''[[StarWars Return of the Jedi]],'' mostly on the strength of his classic [[Film/{{Eraserhead}} first film]] and a critically and commercially successful [[Film/TheElephantMan biopic]] that made him a true commodity in the industry. That man's name: DavidLynch, who took the project and made it his own to only a slightly lesser extent than Jodorowsky would have. Due to his alien style and the sheer scale of the book, the already-complex narrative became nearly incomprehensible to some viewers; many theaters handed out [[AllThereInTheManual printed plot summaries]] to patrons. The 1984 Lynch version of ''Film/{{Dune}}'' is the most memorable (and notorious) for its Freudian imagery, [[SceneryPorn elaborate set design]] (containing some holdovers from the Jodorowsky version, including Giger's designs), and AllStarCast. Subsequent recut and extended versions have inspired [[BrokenBase varying]] degrees of critical [[LoveItOrHateIt reappraisal]]. It was a complete flop at the box office and has become both a CultClassic, and an example of how ''not'' to make a blockbuster.


* In 2000, the SciFiChannel produced a three-part miniseries adaptation of the novel. This version followed the plot of the book much more closely, but had a ridiculously small budget, [[AscendedExtra and gave several characters expanded roles]] while paring others down to bare bones or removing them entirely. The Sci-Fi Channel also adapted ''Messiah'' and ''Children'' into a second three-part miniseries in 2003, which [[AdaptationDistillation streamlined two very contradictory novels into a cohesive whole, removed or simplified some of the extremely convoluted plot elements]], and paid off the previous series' CharacterDevelopment of [[AscendedExtra Irulan]], all in all serving as a far more coherent, character-driven bridge between ''Dune'' and ''Literature/GodEmperorOfDune'' than the novels it adapts.

* Although another film adaptation of the first novel [[http://hollywoodinsider.ew.com/2010/01/04/dune-remake/ was in the works,]] it has been shelved indefinitely by Paramount [[http://www.deadline.com/2011/03/paramount-ends-4-year-attempt-to-turn-frank-herberts-dune-into-film-franchise/ over budget issues.]]

''Dune'' also served as the inspiration for several popular video games, most notably ''VideoGame/DuneII: The Building of A Dynasty'' which is the UrExample of the modern RealTimeStrategy game.

Several of these games and the original DavidLynch film contain NotableOriginalMusic.

Notable for having a ShoutOut directed at it in almost every videogame with a ShiftingSandLand area in the form of {{sandworm}}s, possibly an example of PopCulturalOsmosis.

Also notable for providing a great deal of thematic inspiration for the Troperiffic {{tabletop game|s}} ''TabletopGame/{{Warhammer 40000}}'', in particular the concepts of the God-Emperor, the pan-galactic human empire run as a semi-feudal state, and the need for specially-bred psychic strains of human to navigate faster-than-light travel, just to start with.

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!! ''Dune'' contains examples of:

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%% Moderator note:
%% We all know that the Brian Herbert/Kevin J. Anderson novels are [[SarcasmMode the most horrible things in the existence of anything, ever]]. Please do not waste our time inserting FlameBait on the matter that will just have to be deleted by a more even-minded troper. Thank you.
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[[folder: A-H]]
* AbsentAliens: Unless you count the Sandworms, and their [[{{Precursors}} implied creators]]. Even then, the sentience was added after the fact, by Leto II.
** Plenty of non-sentient species are also mentioned in passing. There's a lot of ''life'' in the universe, but none of it talks back.
** In the out of print [[AllThereInTheManual Encyclopedia of Dune]] the Natives of Caladan are sentient: morons by human standards and around Stone Age level of technology, but sentient all the same. They are mentioned maybe once in the series proper though. Mind you, the Encyclopedia is not fully {{Canon}}.
* AccidentalMarriage: Paul, before adapting to Fremen culture, asks Chani to carry his water tokens for him without realizing that only a betrothed does this for a man, making his offer tantamount to a proposal.
** Paul's defeat of Jamis also counts, since he didn't realize he'd inherit Jamis' widow out of it -- though, given the choice between accepting Harah as wife or as servant, he chooses the latter. (Having killed her husband, he's required to take responsibility for her either way; on the other hand, there's the succession of House Atreides to consider, as well as the fact that he doesn't particularly want to marry Harah in any case.)
* AcheyScars: Gurney Halleck sports a long, red scar along his face that chronically delivers residual pain due to abuse suffered from the poisonous plant inkvine during his time as a Harkonnen slave.
* ActionGirl / ActionMom:
** Chani.
** Jessica as well in the first book, when she has to be. Her fight with Stilgar is a good example: [[CurbStompBattle short]], to the point, and lets her and Paul introduce themselves to the Fremen properly.
* AddictionPowered:
** Guild Navigators breathe great quantities of melange/spice, giving them limited powers of prescience, enough to find safe passage when their ship is traveling faster than light. The general population doesn't gain this benefit.
** The Mentats derive their enhanced mental abilities (said to exceed even the most advanced electronic computers) via consumption of sapho juice; however, a Mentat must endure lifelong training (and probably genetic enhancement as well) before the sapho juice can have its stated effect.
* AdiposeRex: Baron Vladimir Harkonnen is grotesquely obese, but counteracts this by wearing small anti-gravity devices that make him [[{{Acrofatic}} as agile as a healthy young man]].
* AerithAndBob: While the first book introduces many distinctly-European names, such as Paul, Jessica, Gurney, and Duncan (even Baron Harkonnen, whose first name is Vladimir), the names get far more exotic as the cast fills out throughout the series. Notable examples include Hasimir Fenring, Hwi Noree, many Fremen, and the Latin-European-Greek full names of the Bene Gesserit.
* {{Aesoptinum}} / DoesThisRemindYouOfAnything : The Spice. It's one of the few clear-cut allegories in the book -- a precious resource absolutely vital to the economy, much like gold in past eras and oil today. To hammer the point home, Herbert even compared the CHOAM company (which oversees the Imperium's commerce, including spice procurement) in one interview to RealLife international trade organizations, including OPEC. As for the {{Aesop}} : [[HumansAreBastards Humans Are Greedy Bastards]] and will often do anything in order to collect as much spice as possible, including armed conflicts, espionage, assasinations, and a great variety of immoral acts, all out of blind wilfulness and greed. Thus, Paul (and later Leto II) act against humanity's immediate desires in order to save it from itself.
** RippedFromTheHeadlines: When the first book was written, Africa, Asia, and the Middle East were undergoing decolonization; the client states in those regions set up friendly local governments to ensure access to the natural resources their former colonies had provided, a process that had profound economic and geopolitical consequences (especially ''vis a vis'' the UsefulNotes/ColdWar). In particular, the OPEC cartel was formed during this period.
* AFatherToHisMen: Lampshaded when Duke Leto Atreides risks his life and the priceless Spice to save his men; Liet-Kynes comments that a man such as that would inspire fanatical loyalty. It's implied that this is exactly why the Emperor wants him dead, because he fears Leto will use his popularity to depose him. There are further hints that this may be a mask designed expressly for the purpose, although it's explicitly contradicted by the prequels.
* AGodAmI: When Paul fully awakens his potential as Kwisatz Haderach he becomes a messiah to peoples of thousands of worlds, only to be elevated to the status of god in the millennia following his death.
* AgonyBeam[=/=]HandInTheHole[=/=]LifeOrLimbDecision: The ritual of the gom jabbar is a test employed by the Bene Gesserit, performed by requiring the examinee to put her hand into a box that causes [[AgonyBeam excruciating pain]] by nerve induction. A poison-coated needle -- the gom jabbar itself -- is then held to the "victim's" neck with the threat of instant death should she withdraw her hand without permission. The test is whether the person can master her instinctive desire to flee the pain, thus proving her "humanity". Paul Atreides is one of the few males to be administered the test, and his passing of it is seen as a sign of his future role as the [[TheChosenOne Kwisatz Haderach]].
-->"He thought he could feel skin curling black on that agonized hand, the flesh crisping and dropping away until only charred bones remained."
* AIIsACrapshoot
** In the original books, it was not that the computers were inherently bad, it was that humanity chose to destroy them because they were making humans lazy and limiting humanity's potential, effectively making them dependent on sentient machines for survival. Computer AI was later demonized.
** In the prequels, Omnius was actually doing what he was programmed to do (the conquest and enslavement of humanity), he just decided to work for himself, and not his Titan masters.
* AlternativeCalendar: The calender used in the book begins from the establishment of the Spacing Guild's monopoly on space travel, with BG standing for "Before Guild" and AG being "After Guild".
* AlwaysNight: The planet Giedi Prime is fouled with pollution, preventing sunlight from piercing the cloud cover.
* AmazonBrigade:
** Fish Speakers, Honored Matres, and the Bene Gesserit.
** Alia's female guards are also explicitly referred to as amazons.
* AMillionIsAStatistic: This is Paul's horror at seeing the future in the first book, which [[YouCantFightFate becomes true]] in the second. There's a scene where he [[GodwinsLaw compares himself to Hitler]] -- "He killed more than six million. Pretty good for those days... Statistics: at a conservative estimate, I've killed sixty-one billion, sterilized ninety planets, completely demoralized five hundred others. I've wiped out the followers of forty religions..."
* ANaziByAnyOtherName: Frank Herbert stated he based the Harkonnens on the Nazis.
* AncientAstronauts[=/=]AllMythsAreTrue: A variant in that humans themselves fill this role, with the Bene Gesserit purposely spreading myths based on heroic and religious archetypes throughout fledgling colonies to make use of the people there later.
* AncientConspiracy: Although they are more visible than most ancient conspiracies, the Bene Gesserit definitely count: they have manipulated practically all existing religions in the ''Dune'' universe to be tools for their purposes, to the point a Bene Gesserit can basically go to any planet and detect different cues and codes within the local religion's tenets to know exactly what to say and do to present herself as a paragon, prophet or even messiah of the local religion. This is how Lady Jessica insinuates herself and Paul into the Fremen culture. Of course, Jessica had no way of knowing Paul would become an ACTUAL messiah.
* ArchaicWeaponForAnAdvancedAge: {{Justified|Trope}}. Personal shields block projectile weapons and lasers trigger nuclear-level explosions when they hit them, but a slow-moving blade can slip through, so melee combat is once again part and parcel of infantry battles.
* AristocratsAreEvil: Probably the only exception is Duke Leto. And even then, only maybe.
* ArtificialHuman: Any Tleilaxu-creation, including the Face Dancers, Gholas, clones, some Mentats, and [[MixAndMatchCritters human-animal hybrids]].
* AscendedExtra: Duncan Idaho, in the first book, actually ''dies'' only to become the only character to feature in all six novels of the original series.
* AsskickingEqualsAuthority: [[SubvertedTrope Subverted]]. Early on, Paul earns credibility among the Fremen by reluctantly killing one who challenged him to combat. The Fremen, like the Bedouin culture they loosely parallel, have a culture that values "honor," defended through bloodshed. Also, they expect their leaders to succeed by killing their predecessors. Though the Fremen take him for a Messiah and see his leadership as inevitable, he refuses to take the place of the tribe leader Stilgar by killing him. He takes power instead after an impassioned speech deploring the idea of sacrificing a loyal and talented soldier to such a brutal custom. This compels Stilgar to step down, and the Fremen accept Paul's leadership.
** He actually manages a clever bit of political maneuvering, side-stepping the issue when others would have forced his hand, by having the Fremen pledge their loyalty to him not as a tribal leader, but as their Duke (claiming his father's title and right to rule the planet by Imperial law).
* AsYouKnow: Literally entire chapters of it. One chapter begins with the villain introducing himself ''by name'' to his henchmen -- "Is it not a magnificent thing that I, the Baron Vladimir Harkonnen, do?" -- and continues with him explaining his plan to the henchman who helped him to devise it. Justified in that (a) they were recapitulating their plan for the benefit of Feyd-Rautha, whose patience and attention span were equally short; and (b) the Baron himself is a ''gloriously'' LargeHam, and arrogant to boot (and one of the few times when he actually admits to having done a mistake solely by his own fault, it's about being overly fond of describing plans when he shouldn't).
** This trope is also extensively employed in the Anderson/Brian Herbert novels.
* AttackPatternAlpha: Various Houses each have their own, mostly secret languages that are dead to other populations.
* AuthorCatchphrase:
** "Ah-h-h-h-h."
** "Plans within plans...wheels within wheels..."
* BackToBackBadasses: Sardaukar are trained to fight in formations of three so that they never have an exposed back.
* {{Badass}}: Paul. Baron Harkonnen. Leto Atreides. Gurney Halleck. Duncan Idaho. Liet Kynes. Feyd-Rautha Harkonnen. And that's just the first book.
* BadassNormal: Leto Atreides for certain. Vladimir and Feyd-Rautha Harkonnen as well. Most of the Imperial Sardaukar and Paul's Fremen troops also count.
* BadassArmy: The Sardaukar at first, then they are joined in this category by the Fremen under Paul Atreides.
* BadassBookworm: Pretty much everyone that isn't a GeniusBruiser.
* BadassCreed: See page quote.
* BadassFamily: Atreides
* BarbarianTribe: The "evil barbarians" mindset is inverted with the Fremen. While the rest of the universe definitely see them as barbarians, they have a much more complex, honor-based culture driven to barbarian-horde status only by the harsh world they must survive on.
* BastardUnderstudy: Feyd attempts this role with his uncle, the Baron Vladimir Harkonnen, but the attempt fails.
* BawdySong: Gurney Halleck, troubador-warrior that he is, provides a song ("Galacian Girls") that focuses mainly on prostitution:
-->The Galacian girls do it for pearls,\\
And the Arrakeen for water!\\
But if you desire dames like consuming flames,\\
Try a Caladanin daughter!
* BeastlyBloodsports: Duke Leto's father was killed in a bullfight. The prequels by Brian Herbert added that the bull that killed him was hopped up on stimulants rather than sedated like it should have been. A tool of assassination. The original didn't attribute any foul play.
* BecauseDestinySaysSo: How much of ''Dune'' and its sequels are TheChosenOne acting out a ''preordained'' destiny, and how much is actually the MessianicArchetype ''choosing his own'' destiny and then being forced to live it out unto the bitter end? Frank Herbert would like you to think about it.
* BedouinRescueService: In ''Dune'', Jessica and Paul Atreides are rescued by Fremen. They then have to jump through religious hoops and trial by personal combat to prove that they're ''worth'' saving. Of course, they were deliberately seeking out the Fremen, and the Fremen were primed by the religious mythos seeded by the Missionaria Protectiva to look for a Messiah, which Paul and Jessica were trained to exploit. Otherwise they'd have been killed out of hand. Additionally, many Fremen tribes were warned by their leader, Liet, to watch for Jessica and Paul. The novel lays this out clearly through a scene where Liet-Kynes helps them hide from the Harkonnens.
* BeliefMakesYouStupid: Inverted, Subverted, Justified, and Invoked. All depends on your personal interpretation, and which characters you examine. Frank himself said one of the main themes of the series was putting all your faith into one person and following them blindly. You can ''follow'' someone, but to utterly ''submit'' to them leads to total destruction.
* BecomingTheMask: Happens to [[spoiler:Face Dancers that spend too long imitating a person]].
* BeneathSuspicion: Dr. Yueh is this.
* BewareTheSuperman: Main theme of the series.
* BigBad: The Harkonnens, the Tleilaxu, Alia (once she's possessed by the Baron), Omnius. The Moritani in the prequels.
** Largely averted in Dune itself. Baron Harkonnen is TheHeavy, but completely ignorant of the deeper machinations and plays no role in the denouement. TheEmperor is nominal in charge, but he's having his strings pulled by the [[spoiler:Bene Gesserit and the Guild. The Guild is largely TheUnseen, while Gaius Helen Mohiam's influence is subtle.]]
* BigBookOfWar: While not strictly a book, Kanly are the formal restrictions and rules in place on political vendettas between royal houses. There does exist, however, the ''Assassin's Handbook'', which deals with poisons and other weapons of war.
* BilingualBonus: Cielago, the Fremen term used for bats, is based off of the Spanish word for 'bat': ' mur'''cielago''' '.
** Also true for the general Fremen language, which is largely based on actual Arabic terms and phrases. And the Teilaxu secret language as well.
** Both the "Bene Geserit" and their creation, the "Kwizats Haderach", to Hebrew speakers.
* BizarreSexualDimorphism: There are no female Tleilaxu. This is because [[spoiler: the axlotl tanks ''are'' their females, having been engineered into being just gigantic wombs on life support.]]
* BlackAndGrayMorality: The novels are consistently and deliberately ambiguous about the relative morality of each of the various factions. House Atreides, the most conventionally moral of the Great Houses depicted in the story, is made to pay heavily for its idealism.
* BlatantLies: In the first novel, Stilgar tries to put Jessica at ease by assuring her that Fremen men do not take women by force. However, readers have already been introduced to the Fremen custom of male duel victors inheriting the wives of their vanquished opponents (and everything that implies). The Fremen justify this practice by saying that the victor is assuming the responsibility of caring for his vanquished foe's wife, but the wife is still a spoil of war who doesn't get a say in the matter.
** Stilgar's assurance to Jessica is cruelly subverted in the second novel. The Fremen have [[RapePillageAndBurn brutalized entire planets]] that resisted Paul's rise to the throne. It is clearly and casually stated that Fremen men have raped women on those planets. Then again, the nature of their crusade has changed their culture by this time, and it's clear even in ''Literature/DuneMessiah'' that many of them came home damaged by what they saw and/or did.
* BlessedWithSuck: You can see the future. All of it. Every twist, turn, nook, and cranny. There are no surprises. There is no escape. You will never live something that you have not already foreseen. It's even worse for Alia: she has access to the genetic memory of all her ancestors. Unfortunately, this includes her grandfather, Baron Vladimir Harkonnen.
* BlindIdiotTranslation : Several translations into certain foreign languages. Especially common in first editions.
* BodyHorror: Guild Steersmen mutated by spice.
* BrainInAJar: The prequels have brain-jar villains riding around in [[HumongousMecha giant war machines]] ([[RuleOfCool just because they can]]), who cause the [[RobotWar Butlerian Jihad]] through poor programming of their [[AIIsACrapshoot computerized inside "man"]] and wind up as minions/slaves themselves. Besides the Titans ([[HumongousMecha giant war machines]] ), are the Cogitors, humans who gave up their bodies to spend millennia contemplating the mysteries of the universe. As a group they have declared themselves neutral in the war where humanity is being exterminated like rats.
* BreakTheCutie: A very disturbing example from ''House Harkonnen'' is the prolonged and violent forced prostitution (and eventual [[KillTheCutie murder]]) of Gurney Halleck's gentle younger sister Bheth. First she is kidnapped by the Harkonnens for trying to protect her brother. Then they cut out her larynx so she can't do more than scream wordlessly. Next she is subjected to 6 years (starting at age 17) of sadistic rape and torture by a recorded 4620 Harkonnen soldiers. Rabban finally kills her in retribution of Gurney's attempt on his life.
* BrotherSisterTeam: Paul and Alia
* BureaucraticallyArrangedMarriage: The Bene Gesserit arrange marriages for the members of their sisterhood.
** Paul's marriage to Princess Irulan certainly counts.
* ButForMeItWasTuesday: In the Dune Encyclopedia, under "Atomics", they mentioned the first ever use of the weapons was by House Washington (the USA) in a "provincial conflict."
* ButtMonkey: Duncan is reincarnated as a ghola. [[spoiler: Again. And again. And again. And again. And killed (rather than dying of old age) only a slightly smaller number of times.]]
* ByTheEyesOfTheBlind: {{Inverted|Trope}}. Siona and her descendants cannot be detected by prescience.
* TheCaligula: The Harkonnens are an entire family of Caligulas. Gladiatorial death sports, hunting humans as game, bizarre sexual practices, murdering random servants, obscenely expensive luxuries, drug addiction, torture as entertainment--they did it all.
* CameBackStrong: Paul Atreides almost dies when he drinks the water of life, and when he wakes up he is the Kwisatz Haderach.
** Norma Cenva is tortured by the cymeks until she releases a destructive psychic wave of her latent powers. The wave not only kills her captors but also destroys her body. In that instant, she gets access to Other Memory and rebuilds her body molecule-by-molecule into that of an extremely attractive woman. She also becomes the most powerful sorceress of all.
* CannotTellALie: Mentats. In the books, the Bene Gesserit are also explicitly said to be incapable of outright lying, due to their training and method of consciousness expansion. Because of this, they have become masters of evasion and misdirection. "A Bene Gesserit will always tell the truth, but rarely the ''whole'' truth." (paraphrased)
** Averted in the prequels, where the first mentat Gilbertus Albans lies constantly in order to protect himself and [[spoiler:Erasmus]].
* TheCaptain: In the first novel, during the Atreides Dukedom, military leaders of the House (Gurney Halleck, Duncan Idaho and presumably others) bear the title "Captains", despite them leading entire armies. This falls in line to the medieval setting, as [[http://en.wikipedia.org/wiki/Captain_general Captain General]] was the rank of a commander-in-chief during TheLateMiddleAges.
* TheCasanova: Duncan Idaho, dear god. Described as having a devastating masculine appearance and animal magnetism. Brought back to life as a ghola hundreds of times to be used as a stud in various sex-related schemes that resulted in thousands of children and eventually millions of people with his genes. This comes full-circle when the Tleilaxu conditioning he receives from his last incarnation allows him to [[spoiler:seduce an Honored Matre]].
* TheChainsOfCommanding: The Atreides bear a lot on their shoulders.
* ChallengingTheChief: Subverted; Paul refuses to face Stilgar in ritual combat because they both knew Paul would win and Paul wants him to remain chief for his role as a loyal political adviser. As he puts it, killing Stilgar would be like cutting off his own right arm.
* CharacterTics:
** Hasimir Fenring and his wife annoyingly hum while they speak, read as "Uhhh-hmmmmmmmm" every time. It's actually their private code language, use to share information between themselves secretly while in front of other people.
** The Baron apparently tapped his fingers during anxiety or boredom, as shown in ''Children of Dune'' when Alia becomes possessed with her ego-memories of him.
*** Done in a different fashion in the [[Series/{{Dune}} Sci-Fi Channel miniseries]]. The Baron has a habit of rubbing at his cheeks or temples with the first two fingers of his hand whenever he grows frustrated or annoyed; we later see Paul making the exact same gesture.
* CharlesAtlasSuperpower:
** The Bene Gesserit train themselves to alter their blood composition, manipulate others by voice alone, being able to hold their breath for long periods of time, delay aging, neutralize any poison or drug, possibly see the future, and intense martial arts. They only get the future-vision and molecular control from the Spice. Everything else is pure Charles Atlas, with a few hints of selective breeding.
** The Honored Matres are revealed to be even more intense in their results in certain areas, but lack in others. The two groups eventually [[spoiler:unify into one, combining the strengths of each]].
** Mentats as well are "human computers". They are trained to possess photographic memories and deduce perfectly logical conclusions from the barest minimum of information. A Mentat Advisor is one of the most valuable assets that a noble house can have; when he first landed on Arrakis, Paul had just found that he had potential Mentat capabilities himself[[note]]and, in fact, that his father had been training Paul to become a Mentat his entire life, but to complete the training Paul had to knowingly embrace the rest of the program--which he does without hesitation[[/note]] -- to quote Duke Leto, "a Mentat ''Duke'' would be formidable indeed". But just try using one as an iPod.
* ChekhovsGunman: "Princess Irulan," the lady who's writing the EncyclopediaExposita about Paul from which the novel's {{Epigraph}}s come. Even though her name has been on every fifth page of the book, she doesn't show up ''in person'' until the last 20 or so, and we don't learn until the very last page (or, if you prefer, for another two books) just ''why'' she's [[AllLoveIsUnrequited so interested in chronicling him]].
* ChemicalMessiah: Melange is this.
* TheChessmaster: Practically every named character originating from the Imperium and not from Arrakis, to varying degrees. Every single one of whom is OutGambitted by Paul, and later Leto II.
** In the final two novels [[spoiler:Erasmus]] is proven to be rather adept at it as well. He insinuates that he was behind most of the schemes and subtly manipulated half the events of the final few novels.
* ChildOfTwoWorlds: Jessica and her son Paul Atreides are both Harkonnens as well, since Jessica is really Baron Vladimir Harkonnen's daughter. Combining the Atreides and Harkonnen bloodlines is a necessary part of the Reverend Mothers' plan to sire the Kwisatz Haderach.
* TheChosenOne[=/=]MessianicArchetype: Paul as the Kwisatz Haderach
** The series as a whole shows [[DeconstructedTrope just how disastrous these tropes would be]] in [[RealityEnsues reality.]]
* CirclingVultures: After Liet-Kynes is left in the desert to die, he sees hawks (the Dune equivalent of vultures) circling overhead.
* TheClan: Feuding Houses of noble families play a large part in the first book, though the Atreides name carries down through the millennia.
* ClingyCostume: As a matter of survival. The climate of Arrakis is such that the Fremen must wear their stillsuits at all times outside sietches, and sometimes even inside, as they have a deeply ingrained cultural taboo against wasting water. Subverted later, when Stilgar notes in disgust how many Fremen who have achieved high positions within Muad'Dib's Empire never wear stillsuits anymore when they go into the desert, as they can afford to waste water. Anyone who has smelt an old wetsuit might work out why they were keen to stop, and it is outright stated that Fremen stink in closed spaces.
* CloningBlues: Gholas (clones of the dead), especially the multiple incarnations of Duncan Idaho.
* CloningBodyParts: In the prequels the early Tleilaxu were known as suppliers of transplantable organs that they grew on trees. However, while they did do that it didn't provide enough organs to meet demand during the Butlerian Jihad so most of their products were a side of their slaving business.
* CocaPepsiInc: Perhaps the most famous example in science fiction. Due to thousands of years of space migration, various religions and cultures have merged, split, then re-merged again and again. The Fremen are Zensunni, a combination of Sunni Islam and Zen Buddhism. Though most of this occurred naturally, it eventually was pushed this way by an ecumenical council that produced the "Orange Catholic Bible". The title suggests a reunification of Catholicism and Protestantism (the militant, anti-Catholic Protestant Irish Orangists), although it is actually far more ecumenical, incorporating "Maometh Saari, Mahayana Christianity, Zensunni Catholicism and Buddislamic traditions".
** A few religions manage to survive intact through the millennia, most notably Judaism.
** There are also Zenshiites in the prequels, a more violent sect than the Zensunnis.
** Also, while the Corrino Imperium appear to have tolerated many religions (after all, what were a bunch of non-violent monks on Lankiveil going to do?), Paul's fanatic followers demand that everyone worship Muad'Dib or die. When the Lankiveilian Zensunni monks refuse to build a giant statue of Muad'Dib, Paul orders them slaughtered and their temple burned to the ground.
** The novel ''Sisterhood of Dune'' reveals that the creation of the Orange Catholic Bible was hardly easy. The ecumenical council did not have the blessing of the Imperium and was just a bunch of scholars who thought they could logically compel fanatics into accepting a unified faith. The millions of people killed shortly after the publishing of the book prove them wrong. The members of the council are almost universally shunned and hunted by the Butlerian fanatics. While Emperor Julius Corrino initially offers them sanctuary in his palace on Salusa Secundus, when the leader of the council is caught [[TooDumbToLive sleeping with the Empress]], the entire council is publicly executed.
* ColourCodedCharacters: The novels have the Harkonnens in blue, the Atreides in green (presumably referencing Islam), Reverend Mothers in black aba robes, and Spacing Guild representatives in grey, denoting their neutral status.
* CombatClairvoyance: The Kwisatz Haderach has the ability to (among other things) see into the future. Mentats can also see the future by way of "projecting" the possible outcomes of a given choice, but their role is not usually that of a military strategist.
* CompellingVoice: The Bene Gesserit have the Voice. Jessica uses this in the first novel to facilitate the escape of her and Paul, by making the guards kill each other. The fear of this prompts various defenses, including stationing deaf-mutes as guards for important people and, later, conditioning people to reflexively kill at the first sign of Voice being used. In the original novel, the Bene Gesserit have to study the target of the Voice in order to adjust their pitch accordingly.
* TheCommiesMadeMeDoIt: Dr. Yueh's rationale for betraying the Atreides.
* ConLang: Many of the phrases and terms used throughout the book have some basis in real-world languages. The Fremen speak a clear development of Arabic. Galach, the official language of the Imperium, is described as an Anglo-Slavic hybrid with some other tongues mixed in for good measure -- and it shows... in the rare instances when we get to read some actual untranslated phrases from it.
* ContrivedCoincidence: Gurney Halleck, the one member of Leto's men who's still alive and on the planet, just so happens to be aboard the smuggling ship that falls for Paul's false spice bed trap.
* ConvenientCranny: While Paul and Jessica are fleeing a Sand Worm, they find a crack in a cliff and successfully hide from it.
* CoolButInefficient: A lot of the tech, [[JustifiedTrope justifying]] the FeudalFuture / PunkPunk feel of TheVerse. Much of this is deliberate due to prohibitions against thinking machines and the dominance of shields in warfare.
* CoolChair: The Emperor's throne is described as "massive chair carved from a single piece of Hagal quartz". In ''Dune Messiah'' this is changed to "Hagar emerald" (probably a typo).
** This may be intentional actually. Green is the color of mourning on Arrakis, the color of House Atreides, and also represents the terraform dream of Liet and the Fremen. So by having a new throne carved of emerald Paul is able to represent his powers of life and death with the symbolic throne.
* CrapsackWorld: Dune is a universe of tyrannical regimes, war and constant backstabbing. And even the most moral factions aren't that moral either -- see BlackAndGrayMorality.
* CrazyCulturalComparison: Handled in a serious manner when Stilgar the Fremen meets with Duke Leto. He spits on the table. As the Duke's men are about to carve Stilgar into lunchmeat, Duncan Idaho tells them to hold, then thanks Stilgar for "the gift of his moisture", spits on the table himself, and explains that doing so is a Fremen gesture of respect (since water is so scarce on Arrakis).
* CrazyPrepared: The Bene Gesserit spent generations working their Missionaria Protectiva program on backwater planets with the goal of instilling superstitions into the local populace so that, if everything went south, any stranded member of the Sisterhood could take advantage of those superstitions with signs and prophecies tilted in the favor of the Bene Gesserit. It pays off when Bene Gesserit-trained Paul and Jessica Atreides are forced to flee into the deserts of Arrakis and utilizes Fremen superstition to convince the Fremen to take them under their wing. This turns around to bite the Sisterhood in the ass, however, when Paul totally exploits the Missionaria Protectica and integrates himself into Fremen religion, turning him into a Messianic figure amongst the natives, and uses this as a key point to begin his ascent to Emperorhood.
* CreepyChild: Alia, who scares everyone who doesn't intimately know her.
* CreepyUncle: The Baron, completely obsessed with his young nephew. Somehow worse that he considers him an adopted son.
* TheCreon: The Bene-Geserit play this trope on an organizational scale. They do not believe that assuming direct control of the empire will be beneficial to them, and instead conduct extremely elaborate (millennia-spanning) schemes to remain advisors to the emperor while controlling the empire only from the shadows.
%% All CrowningMoments go on their respective articles.
* CultureClash: Played constantly throughout the novels, especially between the Atreides and the Fremen. Specific examples include the meeting between Leto and Stilgar, and Paul's accidental gift of "watercounters" to Chani.
* CultureChopSuey: A classic example. Millennia of galactic colonization have created completely new unrecognizable ethnicities and modified versions of current Earth religions.
* CulturedBadass: Pretty much ''everyone''.
* CyanidePill: Yueh gives Duke Leto a poison-gas tooth so that he can kill the Baron Harkonnen. This makes Leto something of a kamikaze -- but an unsuccessful one, as the gas only kills Piter.
* CyborgHelmsman: The Navigators rely on spice in the absence of thinking machines to be able to travel safely.
* DamnYouMuscleMemory: Rare literary example; Paul is accustomed to attacking slowly while sword-fighting in order to circumvent the deflector shields that are common in the empire, which have a stopping power proportional to the inertia of the object impacting them (The faster an object is moving the harder it is to penetrate the shield). However, when he finds himself in shield-less combat his attacks are sluggish and too slow to draw blood; this is unintentional, but because his defenses and reactions are so quick in comparison the viewing Fremen believe that he is simply toying with his opponent, and comment with disgust.
* DangerouslyGenreSavvy: Yueh, who anticipates the Baron having already killed his wife and planning to kill him [[YouHaveOutlivedYourUsefulness once he outlived his usefulness]], devises a plan to [[TakingYouWithMe take the Baron with him]]. It doesn't kill him, but it does kill Piter.
** Baron Harkonnen, when informed that Paul and his mother must have escaped into the desert and that NoOneCouldSurviveThat, insists that his men find the bodies, just in case they make the OneInAMillionChance.
* DarwinistDesire: the Bene Gesserit actually have Darwinist Desire ''Matchmaking.'' They've been secretly manipulating the marriages of all the members of the noble houses to produce the Kwisatz Haderach, a being capable of omniscience.
* DaysOfFuturePast: Set cca 10,000-12,000 years in the future, the Empire is based off the Holy Roman Empire and Byzantine Empire -- with feuding noble houses, an emperor, mercantile trading, monastic church-like organizations...
* DeadGuyJunior: Paul named not just one but ''both'' of his sons after their late grandfather, though one (son) had died by the time the other came along. Oddly, they're both named Leto II.
** Paul himself is named after his grandfather Paulus Atreides.
* DeadGuyOnDisplay: Paul displays his father's skull in a small memorial.
* DeadlyDecadentCourt: Shaddam's imperial court, which leads in no small part to its downfall.
* DeathFakedForYou: Dr. Yueh made it easy for Paul and his mother Jessica to escape into the desert and presumed dead.
* DeathWorld: Both Arrakis and Salusa Secundus are so deadly that simply surviving them develops the two most feared fighting groups in the universe, the Fremen natives and Sardaukar soldiers.
* DeflectorShields: Subverted, as shields [[PhlebotinumOverload explode when contacted by an Energy Weapon, specifically lasers]]. Not to mention that they only stop fast things like bullets; according to the glossary, objects moving "6 to 9 centimeters per second" will still get through, and it's a plot point that, for Paul, [[DamnYouMuscleMemory counterattacking at this slower "shield" speed has become force of habit that he has to overcome. (On the spot.)]]
** It's mentioned during Paul's fight with Gurney that the air was becoming stale because it couldn't be exchanged. (A deflector shield which keeps out fast-moving objects would isolate the wearer from things like, well, oxygen -- individual molecules of which drift around at [[http://en.wikipedia.org/wiki/Kinetic_theory several hundred metres a second]] even at room temperature.)
** The shields are also useless in the desert of Arrakis. First of all, it cannot stand up to the desert's powerful storms. Second, the rapid oscillations of the shield drive any sandworm into a murderous frenzy.
* DeconstructorFleet: For TheChosenOne, the MessianicArchetype, and [[TheHero hero]] tropes in general.
* DeliberateValuesDissonance: Alia marries Duncan Idaho when she is only fifteen (his age is a little murky because he died in the first book and was resurrected, but he was definitely an adult before Alia was born). This marriage serves to reinforce the idea that Alia's flesh is only fifteen, but her experience is ancient.
** Alia apparently rather enjoys this trope, as Jessica comments upon seeing her after nine years that "she hasn't aged a day," meaning that, despite being in her mid-twenties, Alia still looks like a fifteen-year-old.
* DemotedToExtra: Happens quite a fair bit over the course of the series, with Jessica, Gurney, Stilgar, Harah, and Irulan as a few examples (although some of them, like Jessica, are only temporarily demoted).
* DepravedHomosexual: Baron Vladimir Harkonnen. Though at the time of the main series of books his lust is placed solely on adolescent boys, mention of youthful exploits with women is made. The first is his fifteen year old nephew and the second is his grandson of the same age, though he was unaware of this relation.
* DesertBandits: The Fremen raid Harkonnen patrols and spice harvesters and extract their water (including that in the personnel). But the real reason for those attacks was to keep them from stumbling across the Fremen's secret terraforming operations.
* DesertPunk: A TropeCodifier here.
* DesignerBabies: Everyone ''thinks'' this is how the Tleilaxu produce their various genetically modified human products...
* {{Determinator}}: Yueh, after getting dead. The poor fellow doesn't stay upright for ''long'', of course, but long enough to go out with some dignity.
* DeusEstMachina: The backstory suggests humanity once created machines so advanced that life became incredibly easy and comfortable. It is implied that humans (or at least a large number of [[WellIntentionedExtremist fanatics]]) became so abhorred by their perceived over-reliance on intelligent machines (and advanced computer technology in general) that they initiated the Butlerian Jihad, a violent purge of all Artificial Intelligence and advanced computers. When the Jihad ended, it became a crime by religious and secular law to create advanced computers (the chief commandment resulting from this war is that "Thou shalt not make a machine in the likeness of the human mind"), with all of their functions in calculation and space travel adopted by specialized humans (who arguably become a human form of this trope). The prequel novels which detail the Butlerian Jihad as a more straightforward RobotWar against oppressive ruler AIs did, of course, piss off the fans most mightily.
* DeusExMachina: The climax of ''Sandworms of Dune'' has these thrown around like crazy.
* DeusSexMachina: In the final two books, an offshoot of the Bene Gesserit called the Honored Matre arise whom use sex as a form of hypnosis. Numerous galaxy-spanning, [[GambitRoulette wheels within wheels]] plots are derailed when it is discovered that there is a man with the same power. And this man trains other men to use that power. Leading to a feud carried on mostly through ''sexual guerrilla warfare''.
* DidYouActuallyBelieve: A heroic example, where Thufir Hawat (the Atreides mentat) betrays the Emperor and Harkonnens by refusing to kill Paul:
--> "Did you think that I, who have given my life to the service of the Atreides, would give them less now?"
* DigAttack: In the original novel, a SandWorm traveling beneath the sand moves under a spice harvester and sucks it underground by creating a giant sand whirlpool.
->"The worm is now beneath the crawler," Kynes said. "You are about to witness a thing few have seen."
->Flecks of dust shadowed the sand around the crawler now. The big machine began to tip down to the right. A gigantic sand whirlpool began forming there to the right of the crawler. It moved faster and faster. Sand and dust filled the air now for hundreds of meters around.
->A wide hole emerged from the sand. Sunlight flashed from glistening white spokes within it. The hole's diameter was at least twice the length of the crawler, Paul estimated. He watched as the machine slid into that opening in a billow of dust and sand. The hole pulled back.
* DoesThisRemindYouOfAnything: A (nearly) orphaned young man, begins receiving visions, becomes an exile from a desert-based center of commerce and religion, marries a notably older widow, granting him status among his adopted tribe, becomes a powerful religious leader by uniting a nomadic people with a history of in-fighting, and eventually leads an army of the faithful to claim control of the city from which he was exiled by political rivals. After solidifying this base of military and mercantile power, the new religion sweeps across most of the known world (sometimes violently, but with many civil reforms in their wake), eventually playing an essential role in discovering and then preserving caches of precious knowledge through a dark age of human history.
** For those unfamiliar with early Islamic history, Paul parallels Muhammed in some rather obvious ways (but without being a heavy-handed expy by any means). The prevalence of Arabic phrases, and the similarity between "Muhammed" and "Muad'dib", isn't accidental.
** Paul is also broadly similar to Lawrence of Arabia during the Mesopotamian campaign. Like Lawrence but unlike Mohammed, Paul is an outsider to the tribal cultures that he unifies against his enemies, and is a respected scholar of sorts.
* {{Doorstopper}}: While none of the books in the series are especially long individually, a [[TwoPartTrilogy loose trilogy]] is formed between the first three books to clock in at 912 pages with appendixes. There's still three more books after this.
** There is an [[http://www.amazon.com/Great-Dune-Trilogy-Children-GollanczF/dp/0575070706/ omnibus edition]] that contains the first three books in one volume.
* TheDragon: Subverted with both Feyd-Rautha Harkonnen and Hasimir Fenring. Feyd-Rautha fought Paul Atreides on behalf of the Emperor, but only because he saw killing Paul as a stepping-stone to the throne; and Fenring was such a deadly fighter that the Emperor knew he could kill an exhausted Paul after his previous fight with Feyd -- only for Fenring to realize that he and Paul are {{not so different}}.
* DrawSwordDrawBlood: The Fremen consider re-sheathing a crysknife without drawing blood to be a very grave offense.
* DreamingOfThingsToCome: Paul has dreams about the future (including later events on Arrakis) before gaining his full prescient ability.
* DropShip -- somewhat more literal than most cases, "Crushers" mentioned in the [[AllThereInTheManual glossary]], are designed to literally crush enemy fortifications. They're also made of [[MilitaryMashupMachine a bunch of smaller ships stuck together]]. Typical examples of a DropShip and AwesomePersonnelCarrier are also mentioned (at least in the first novel, where they're used by Sardaukar and Harkonnen soldiers).
* DuelOfSeduction: With technique and counter-technique.
* EitherOrProphecy: Paul can see possible futures and must choose the best one to carry out.
* EmotionsVsStoicism: The Bene Gesserit stress emotional control at all times as both proof of humanity and a basic survival tool with the [[SurvivalMantra Litany Against Fear]]. Unlike [[Franchise/StarTrek Vulcans]], they're more than happy to use emotion as a tool to manipulate others -- their emphasis is control, not denial.
* EmperorScientist:
** Dr. Kynes became leader of the Fremen because of his attempts to terraform the planet.
** The [[BrainInAJar cymek]] [[HumongousMecha titans]] from the prequels, who were philosopher kings and scientists, particularly ones that dealt with robotics, cybernetics, and artificial intelligence.
** Though not canon, the prequels state that one former Padishah Emperor, working under a false name, was an accomplished chemist that discovered the properties that made Spice so important. The original books state it was a chemist working ''for'' that emperor, so it all depends what you want to believe.
* TheEmperor: The first book starts with Emperor Shaddam Corrino IV, who is overthrown by Paul by the time the novel ends.
* TheEmpire: Purposely set up this way by the Bene Gesserit and Spacing Guild, though noble families had existed before the Butlerian Jihad. The Padishah-Emperors (except for Feykan Corrino) are descendants of the last of the old emperors. This includes Paul via his Richese lineage.
Paul is described as this in the first book, justified due to the intensive training he was given as heir to House Atreides. The In the first book, the Baron breaks Dr. Yueh of his Suk conditioning, thus allowing him to act as a traitor against his royal charges. The later books elaborate on a barely mentioned act in the first book, where Bene Gesserit condition males through psychosexual techniques (a process called hypno-ligation) to act in a specified way on a given code word. In
* EncyclopediaExposita: Every chapter is headed by a quote from Princess Irulan's studies of Paul-Muad'Dib.
* EvilChancellor: Subverted thoroughly with Dr Wellington Yueh and Thufir Hawat. Dr Yueh looks almost exactly the part of the evil chancellor -- tall, blade-thin with a drooping moustache and cold, intellectual manner. He even betrays the Atreides, and the readers find out about it right from the start. He's only doing it because the Harkonnens have probably killed his wife, but he's ''not sure'' -- and for the chance to get a bit of revenge. Hawat on the other hand looks like the grandfatherly mentor, but is the Duke's [[TheSpymaster ''Master of Assassins'']], and employs methods that horrify Jessica.
* FaceYourFears: The Litany against fear promotes doing this whenever possible.
* FalseReassurance: The Baron promises Dr. Yueh that if he betrays the Atreides he would stop torturing his wife and allow him to join her. After Yueh does so, the Baron has him killed, as he had done earlier with his wife, thus carrying out his promise to the letter. Of course, Yueh already knew perfectly well what the Baron would do, he just couldn't bear to live without having it confirmed.
* FantasticHonorifics: "na-" is used as a prefix to a rank (for example, na-Baron) to refer to the heir to that rank. It's short for "nascent."
* FantasyCounterpartCulture: More like CultureChopSuey.
* FantasyGunControl: Firearms exist in large numbers but they have been rendered as secondary weapons due to the prevalence of personal [[DeflectorShields force shields]]. Force shields can, however, be penetrated by close combat techniques, so those are the dominant means of warfare. Laser weapons are also highly limited since a laser beam hitting a force shield cause both the gun and the shield generator to explode with enormous power. Which means that some uses of shields are only practical because shooting them with lasers is physically equivalent to using nukes.\\
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[[SubvertedTrope Subverted]], however, when it turns out that using personal force shields on Arrakis attracts sandworms. One of the common Fremen weapons is the "maula pistol", essentially a spring-loaded slugthrower. And also when Baron Harkonnen uses old-fashioned artillery to trap the retreating Atreides soldiers in caves.
* FasterThanLightTravel: In the main ''Dune'' novels, achieved exclusively via the use of the Holtzman generators, folding space nearly-instantaneously to the destination. However, in order to avoid getting atomized on the way, Spacing Guild Navigators are required to envision the safe passage (since computers aren't allowed).
* FeudingFamilies: Feuding families are so prevalent in the Dune universe that it has evolved into an art form. There's "Kanly", which is an officially sanctioned House-to-House vendetta, and the all-out War of Assassins, which is just what it sounds like. The rules are codified in the Great Convention, which sets out exactly who are the acceptable targets and what weapons or poisons are permitted. Noble families in the Dune universe accept the fact that you can be knifed in the back at any time as just another hazard of the job.
** There are even separate words for poison in food ("Chaumas/Aumas") and poison in a drink ("Chaumurky/Musky.")
** It says at one point during the first novel and again in the appendix that assassination is actually the preferred method of war, as it involves only a few people and therefore spares the lives of millions of possible conscripts.
* FeudalFuture: {{The Empire}} is intentionally set up this way. The novels themselves are considered to be the TropeCodifier.
* FictionalDocument : Where... to... begin... Perhaps with the {{Fictionary}}.
* FictionalGenevaConventions:
** The Great Convention, which prohibbit certain weapons from being used in warfare. The most important is the use of nuclear weapons on human targets.
** Kanly and the Wars of Assassins had rules in regard to house fueds and warfare, respectively.
* FiveBadBand: In the first book we become acquainted with exactly five members of the Harkonnen household.
** BigBad: The Baron, whose plot to annihilate the Atreides is the beginning of a larger scheme to sit his family on the imperial throne.
** TheDragon: Feyd-Rautha, the Baron's heir on whom most of his plans hinge; also briefly the dragon to the Emperor, as mentioned above.
** TheBrute: Count Glasso Rabban of Lankveil, but more commonly known as "The Beast" and there's a reason for that.
** TheEvilGenius: Piter De Vries, House Harkonnen's Mentat who masterminds the Atreides' betrayal and destruction.
** TheDarkChick: Iakin Nefud, captain of the Harkonnen house guard, whom the Baron easily manipulates during their encounters.
* FixFic: The end of ''Sandworms.''
* FlyingDutchman: The in-universe legend of Ampoliros: a starship whose crew experiences group psychosis and believes the human race has been wiped out by aliens. They elect to wander the galaxy, taking as many of the aliens with them as they can. The time dilation effect of near light speed travel makes them effectively immortal, every planet is hostile by definition, and any ship is a legitimate target. To make things worse, the men are sick of, and fatigued by, their endless voyage ("forever prepared, forever unready")... but in their minds at least, to stop would spell the end of the human race.
* FollowTheLeader: As an out-of-universe example, StarWars cloned ''Dune'' so well that it [[TropeCodifier overshadows the source]] in popular culture.
* ForegoneConclusion: A major theme of ''Dune'' is YouCantFightFate, so expect these in spades.
** Dr. Yueh's wife, Wanna, is revealed by {{Epistolary}} to be dead long before she, or he, ''or'' [[IHaveYourWife the nature of their relationship]], is even introduced.
** We're told how the first of the book's three parts will end in the second chapter, and the book's ending is foretold in the middle of the second part by the protagonist himself.
* FrickinLaserBeams: Only useful without DeflectorShields, which are ubiquitous, so almost a subversion/aversion. (A lasgun shot hitting a shield is highly unpredictable, and can cause either a nuclear-level explosion or only destroy both shooter and shootee). Also, lasguns are presented unusually realistically for sci-fi (except for the universe-physics-specific shield bit).
* *RippedFromTheHeadlines: Herbert wrote in 1964-1965, [[RaygunGothic when superweapons were all the rage]] in the shadow of the UsefulNotes/ColdWar. First laser was patented in 1959-1960, first functioning examples fired in 1960-1962, ''Film/{{Goldfinger}}'' was released in 1964.
* FutureImperfect: According to the pseudo-canon encyclopedia, House Atreides claims to have been founded by Atreus, the son of Agamemnon of GreekMythology, House Harkonnen claims descent from the Romanovs of tsarist Russia, Alexander the Great is considered to have been the first Galactic Emperor, and members of the "House Of Washington" (i.e., America) were the first historical users of atomic weapons. Averted in some cases, as the Bene Gesserit (and some Atreides) possess GeneticMemory telling them exactly who their ancestors were and covering the entire scope of human history. It's also mentioned that the origin of the planet Ix's name is obscure. Turns out it means [[NumberedHomeworld "nine", from its position in its own solar system]].
* GalacticSuperpower: The Empire that reigned from the Butlerian Jihad to Leto II's planned Scattering.
* GambitPileup: Taken [[UpToEleven Up to twenty-two]]. SerialEscalation and back again, and then beyond again. For the list of who is manipulating who, just use everyone and everybody, respectively. As the simplest example: In the first book, the Harkonnen employ a BatmanGambit by losing Arrakis to the Atreides in order to come down on them like the fist of an angry god with the aid of the Emperor's Sardaukar. The Atreides ''know'' this is what the Harkonnens are trying to do, but are gambling on using the Fremen to fight back in a gambit of their own. It does not go well for the Atreides.
* GambitRoulette: The Bene Gesserit are big on the Gambit Gambling Circuit, manipulating individuals, societies, governments, religions, and bloodlines to produce their [[ChosenOne Kwisatz Haderach]]-- and then having to start over from scratch when they get one too soon.
* GenderIncompetence: In ''Dune'', it seems to be something of a theme to have an all-female society with strange and terrible powers suddenly have to deal with a man with those exact same powers, only several jillion times stronger. \\
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It's stated that the limit of the Bene Gesserit Reverend Mothers was that their training to particularly feminine/maternal instincts meant that they couldn't access their male ancestry in their Other Memory. The Kwisatz Haderach was intended to overcome this weakness (as well as having other capabilities), which would require a male trained in Bene Gesserit ways. Note the fact that the Gesserit ''wanted'' to have a Kwisatz Haderach, but he ended up coming a generation too early for their plans -- and then refusing to go along with them.
* GenderRestrictedAbility: Only women could be Bene Gesserit. They had a long standing breeding program to try and create a male Bene Gesserit. [[GoneHorriblyRight They succeeded.]]
* GenocideBackfire: Arguably happens in ''Dune'', where Baron Harkonnen kills his rival, Duke Atreides, and attempts to do the same with his only son, thus wiping out the Atreides family line and ending the millennia old Atreides/Harkonnen blood feud. At first he thinks he's successful, but they [[NeverFoundTheBody never find the boy's body...]]
* GhostMemory: Bene Gesserit acolytes receive the total line of their predecessors' memories when undergoing the Water of Life. Later books have Bene Gesserit placing their foreheads together to exchange genetic memory in times of extreme danger.
* GirlOfMyDreams: Paul has dreams of the future where he sees the Fremen girl he will eventually meet and fall in love with.
* GiveMeASword
* GlobalCurrency: The Empire's official currency are Solari, but the Spice is universal gold.
* GodEmperor: The series was [[TropeCodifier a big influence]] on the more modern "Memetic Divinity" aspect.
* GossipEvolution: At one point in ''Dune'' Paul is with a force of Fremen warriors which is ambushed by several Imperial [[SuperSoldier Sardaukar]], which the Fremen decimate. Paul somberly notes that as his reputation as the Fremen's [[MessianicArchetype holy savior]] grows, the stories will say that he singlehandedly killed scores of Sardaukar, even though he didn't even draw his knife.
* GoThroughMe: Subverted in a way in ''Dune'': After Chani dispatches a would-be challenger to her lover Paul/Muad'Dib, she says that fewer people will try to challenge him if they learn that first they have to go through (and suffer the possible disgrace of being killed by) his woman.
* GratuitousForeignLanguage: The ''Dune'' universe is positively riddled with words seemingly inspired by or derived from Arabic and Farsi (most of the future religions have some Islam in them). Even Hebrew shows up once or twice. Amongst other things, ''K'fitzat ha'derekh'' (compare to Dune's ''Kwisatz Haderach'') is a magical ability ascribed to some real-world Chassidic holy men -- specifically, the ability to teleport. The twins speak French, because it's a dead language at this time, so nobody else could possibly understand them.\\
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The name of the hunting-language Chakobsa just might be the only time a [[http://en.wikipedia.org/wiki/Circassian_language Circassian]] language has ever been used in Western fiction of any genre. It's taken from the Adyghe word ''Ch'ak'webze'' or ''Ch'ak'obze'', "hunter's language", which refers to a special language register used in the course of a hunting expedition.
* GeneticMemory: Bene Gesserit Reverend Mothers (and Wild Mothers such as the Fremen's and Rebecca) get genetic memories of all their female ancestors, the Kwisatz Haderach gets them for ''all'' his ancestors, as do children of these two. [[CloningBlues Gholas]] can gain past life memories this way too, by being manipulated into doing something their original self would never have done.
* GenderBender[=/=]{{Hermaphrodite}}: Face Dancers are described as "Jadacha hermaphrodites" (a term with an unknown meaning) and "mules" due to their sterility. They are able to change appearance and gender at will, and perform the role of either gender, but cannot reproduce.
* GreenRocks: The Spice, whose effects include increased cognitive abilities, prescience, physical mutation if directly exposed to it in gas form, and a greatly-elongated life-span. It's also used as seasoning: it evidently [[TastesLikeChicken tastes of cinnamon]].
* HadToBeSharp: "God made Arrakis to train the Faithful".
* HappilyMarried: Count and Lady Fenring, even though he's an [[EunuchsAreEvil Evil Eunuch]]. Leto and Jessica are also a happy couple, though politics prevent them from marrying.
* HaveAGayOldTime: "To the east, the night grew a faggot of luminous gray"
* HeirClubForMen: Duke Leto's concubine Lady Jessica was supposed to have a daughter for the Bene Gesserit, but Leto wanted a son, and she went along with him, although it is not made clear if he wanted a son for reasons of getting an heir or just wanted a son because he wanted a male child. In Jessica's case, it was done for love and ended up saving the universe, so...
* HigherUnderstandingThroughDrugs: The appendix to ''Dune'' lists several "awareness-spectrum narcotics" that increased the user's understanding and mental abilities, including melange (by Guild Navigators), the Fremen "Water of Life" (which affected Paul Atreides and his sister Alia), and the drugs used by Bene Gesserit Truthsayers (who were {{Living Lie Detector}}s).
* HorseOfADifferentColor: Fremen climb onto sandworms and steer them with hooks as a means of desert transport.
* HotConsort:
** Paul ends up marrying Princess Irulan for political reasons, but keeps his true love Chani as royal concubine.
** Paul's father, the Duke Leto, never marries the Lady Jessica as it provides some leverage with other Houses, who might want to arrange a marriage. He claims this as one of his few regrets.
* HufflepuffHouse: A fictional example that actually has ''Houses''. House Atreides and House Harkonnen take center-stage with every other mentioned House relegated to background mentions. House Corrino would be a true example of this, but their role of filling the position of the Imperial court makes them important.
* HumanResources: Fremen reclaim water from human waste through their stillsuits, and from the dead by draining them in "death stills".
* HundredPercentAdorationRating: House Atreides is portrayed as having this on their native Caladan in the prequels, and have for generations. This more or less contradicts the original series.
* HyperAwareness[=/=]SherlockScan[=/=]SpiderSense: The Bene Gesserit use their hyper awareness as a tool for manipulation. Descriptions of Bene Gesserit thought processes in the novels are often comparable to chess masters watching the world around them like one big chessboard, and calmly noting their accruing advantage. At one point a Bene Gesserit correctly deduces that there is a hidden room on the other side of a large banquet room by noting the subtle geometry of the walls of the room and the objects in it as being specifically designed to produce a slight echo where those in the hidden room can listen in.
** Even with mental processing as incredible as that, the Bene Gesserit still only learn those abilities as a ''supplementary'' skill for their main areas of expertise. The mentats, however, specialize specifically in HyperAwareness and so are infinitely more adept then even the best Bene Gesserit. Then you take a Bene Gesserit and train her (or occasionally him) as a Mentat.
[[/folder]]

[[folder: I-P]]
* IAmXSonOfY: Paul NEVER makes anyone forget that, before being Usul of the Fremen, before being Muad'dib, before being the awaited Mahdi, before being the Kwisatz Haderach, he is Paul Atreides, son of Duke Leto Atreides. In fact, the closest thing Paul has to a [[BerserkButton berserk button]] is someone belittling the memory of his father or the Atreides name.
* IceCreamKoan: The phrases of the Zensunni sect from ''Dune'' are said to intended to be {{Ice Cream Koan}}s, similar to Zen as mentioned above. Instead of providing enlightenment though bypassing rational thought and accepting paradox; they're intended to teach the student to recognize nonsense and obfuscation, regardless of how logically-constructed and reasonable it may appear, and to see through to the "true" underlying reality. Zen emphasizes acceptance of the irrational. The Zensunni philosophy underlying most schools of thought in ''Dune'' emphasizes the extremes of rationality and mental development (eg. the Mentat human computers, and Bene Gesserit observation techniques).
* IHaveManyNames: Paul Atreides is Paul, Muad'Dib, Paul-Muad'Dib, the Mahdi, Usul, the Lisan Al-Gaib, the Kwisatz Haderach, the Emperor, and the Preacher.
* IKnowYouKnowIKnow: Whoooooooooo boy...
* InconsistentDub: In different Italian translations of the ''Dune'' saga, the Golden Path is translated sometimes to "Sentiero Dorato" and sometimes to "Via Aurea".
** The Turkish translations were particularly bad. While the first four books had decent translations, the last two were terrible despite the fact that the entire series was released by the same publisher. To put it in context, the books would sometimes keep certain terms (such as Axlotl Tanks) in their original English forms and sometimes use a translated term for it ''over the course of the same book!''. It was as if the translator was thinking "You know, I think I should have used a different term for Axlotl Tanks. Oh well. That's what I will do without editing the previous bits for cohesion".
* InsignificantLittleBluePlanet: Humanity rules an Empire of a million worlds that stretches across the galaxy. Thing is, not one of those is Earth. In the main series, the majority of humanity has no idea where their race evolved.
* InstantOracleJustAddWater: The Guild Navigators adapted to life in a spice-filled environment which granted them precognition and the ability to navigate at FTL speeds. They spend most of their lives inside of zero gravity tubes filled with spice laden air rather than a tub of water, but same concept.
* InTheBlood: Apparently all Harkonnens are born evil and all Atreides are born good. Then Paul merges the bloodlines...
* IntrepidMerchant: The Smugglers.
* IShouldWriteABookAboutThis: The very last page notes that Princess Irulan, whose epigraphs appear throughout the first book as chapter breaks, has "pretensions of a literary nature".
* JunkieProphet:
* KickTheDog: {{Enforced|Trope}} as a means of illustrating just how ruthless the Harkonnen can be. At one point in the story the Baron notices Feyd-Rautha spending an excessive amount of time entertaining himself in the house harem. After catching him at it red-handed, the Baron punishes him... by forcing him to go back and kill every single woman in the harem with his bare hands.
* KillItWithWater: Aside from extreme old age or ''atomic explosions'', the only way to kill a sandworm is by completely drowning them in water. The Fremen regularly drown juvenile sandworms in hidden cisterns; as they die, they vomit up what becomes the Water of Life.
* KillMeNowOrForeverStayYourHand: Atreides Mentat Thufir Hawat is captured and enslaved by the Harkonnen during their ouster of the Atreides and is administered a perpetual poison, the antidote to which he receives from the Harkonnen and must take on a regular basis in order to survive. Near the end of ''Dune'', when Paul overthrows the Emperor and confronts the conspirators, the Harkonnen offer Thufir a permanent antidote in exchange for assassinating Paul, who willingly offers his life to Thufir in recognition of his years of loyal service to House Atreides. Unable to bring himself to kill the heir to House Atreides, Thufir instead commits suicide.
* KineticWeaponsAreJustBetter:
** A general rule on Arrakis, as a ploy for being able to fight someone regardless of whether he's foolhardy enough to carry a working personal shield generator or not. Unlike lasguns, kinetic firearms fire projectiles that can always penetrate a personal shield without fear of causing a miniature nuclear explosion. This makes them ideal for fighting shielded and unshielded infantry alike. It is explicitly mentioned numerous times that Fremen [[GenreSavvy prefer to use]] [[FlechetteStorm spring-loaded dartguns]], [[AutomaticCrossbows crossbow-like guns]], or [[KineticWeaponsAreJustBetter just plain old gunpowder firearms]].
** If we count non-firearm weapons as well, bladed melee weapons count in general in the series' universe. Though thrusting even a simple dagger through a personal shield takes practice, it is an effective enough fighting method. It allows the essentially medieval melee weapons of the setting to stay relevant in infantry warfare. Then again, on planets like Arrakis, where personal shields are too risky ([[BerserkButton because they drive sandworms crazy]]), tactics change accordingly -- with [[SwordAndGun melee weapons and firearms being used in roughly equal measure]].
* KingBobTheNth: It's the year 10,191 of the Galactic Empire, and the current monarch is Shaddam IV, 81st Padishah Emperor. It's never explained within the original novel who exactly the previous three Shaddams were.
* KlatchianCoffee:
** One of many, many uses of Spice is to generate dangerous levels of sanity. It's also used as flavoring for coffee.
** Mentats drink sapho juice, a drug that is claimed (in-universe) to amplify mental powers.
* LadyOfWar: Jessica
* LanguageEqualsThought: The Fremen culture has dozens of words describing various types of sand, and Liet-Kynes intentionally introduces a language based in the terms of ecology, with the express purpose of making the Fremen into an army of terraformers..
* LaughablyEvil: Baron Vladimir Harkonnen is arguably both the BigBad of the first book ''and'' the comic relief.
* LiteraryNecrophilia: [[http://www.penny-arcade.com/comic/2003/10/15/ This]] ''Webcomic/PennyArcade'' strip.
* LivingLieDetector: Bene Gesserit can notice the visual and auditory cues that denote a lying person. Many courts employ Bene Gesserit for this specific purpose, as "Truthsayers". The Kwisatz Haderach takes this power UpToEleven, as it does all the other BG powers.
* LivingMotionDetector: Hunter-seekers.
* LongevityTreatment: One of many uses for spice, in the sequels when it is plentiful lifespans of three hundred years aren't uncommon.
* LoopholeAbuse: The Great Convention forbids the use of nuclear weaponry by any Great House. ''On People.'' Paul uses them against an inanimate topological feature... [[MagnificentBastard to his immediate tactical benefit.]]
* LukeIAmYourFather: A twofer, actually. Baron Harkonnen is father to Jessica and grandfather to Paul.
* MadLibThrillerTitle: ''Dune...'' or ''...of Dune''
* MainliningTheMonster: Sandworms are the source of the invaluable Spice, without which galactic civilization would collapse. While keeping them captive is unfeasible to say the least, the need to preserve their species runs at odds with the Fremen drive to make Arrakis more liveable for humans, making it a ''major'' political issue.
* MamaBear: Jessica
* ManchurianAgent[=/=]TriggerPhrase: In the first book, the Baron breaks Dr. Yueh of his Suk conditioning, thus allowing him to act as a traitor against his royal charges.
* TheManInTheMoon: The second moon of Arrakis has the shape of a kangaroo mouse, from which Paul takes his Fremen name: Muad'dib.
* MasterOfYourDomain: See CharlesAtlasSuperpower
* MasterPoisoner: Poisoning is very much an accepted science in the world of Dune.
* MasterSwordsman: Duncan Idaho is the archetypal example, identified as such by name, but many of the characters in the first book are skilled with the blade. This is also the [[PlanetOfHats hat]] of House Ginaz, the allies of the Atreides.
** Gurney Halleck is also a master swordsman by any standard ''except'' comparison to Duncan Idaho.
*** But when praised for his swordfighting abilities by Paul, Idaho confided that Gurney could best him "six times out of ten."
* MeaningfulName: House Atreides is named after [[ClassicalMythology House Atreus]], and are even implied to be the [[EveryoneIsJesusInPurgatory same family]].
* MegaCorp: Combine Honnete Ober Advancer Mercantiles (CHOAM) is a trade organization that deals with all exchanges between planets. The Spacing Guild is a monopoly on space travel and controls the prices. They also have a majority of the stock in CHOAM, which just goes to show how much Spice is entwined in human politics, at least until Paul takes over the whole kit and kaboodle.
* MenOfSherwood: The Fremen, though largely a background force, account for most of Paul's success. Their prowess in battle leads them to conquer the ''entire universe'', despite only numbering in the millions.
* {{Mentor}}: Paul has several, including the elder ''Mentat'' Thufir Hawat, and Gurney Halleck.
* MobileFactory: Harvester factories move across the desert refining spice from sand.
* ModestRoyalty: Emperor Shaddam IV, who prefers spending most of his time in the war room rather than in the court, and wears the military uniform of a Sardaukar instead of any royal pomp. Politics really isn't his thing, and he only flaunts his wealth when he has to.
* MonochromaticEyes[=/=]TechnicolorEyes: A result of high-level Spice addiction, when enough ingestion saturates the blood stream and stains the eyes. Described in the books as "blue-on-blue".
* MyMasterRightOrWrong: Count Fenring, except at the very end, when he refuses to kill Paul.
* NationalWeapon: Crysknives, made from the tooth of a sandworm, are sacred to the Fremen.
* TheNavigator: An entire guild of them, who depend on spice to guide their ships.
* NeverFoundTheBody: GenreSavvy villain Baron Harkonnen, upon receiving news that Paul and Jessica Atreides were dead after flying into a sandstorm, asks explicitly, "You've seen the bodies?" He was right to doubt. This series also provides the pagequote for that trope.
* NeverSpeakIllOfTheDead: When Paul kills Jamis in a duel, the other Fremen refrain from speaking ill of Jamis, even though he had a history of violence and unethical actions (i.e., killing Harah's first husband so that he could marry her). However, Harah's nonchalant reaction to Jamis' death, combined with her sons' delight at having Paul as their new father, suggests that they did not think well of Jamis.
* NobleSavage: The Fremen, backed up by a number of quotes in the EncyclopediaExposita, are intentionally set up to be perceived this way. Even their essential cruelty is explained as the cold necessity of survival in a harsh environment, combined with a carefully nurtured desire for revenge against their oppressors. This is reinforced by the decline of the Fremen culture in later novels; as they lose touch with the desert and become "civilized", their power and nobility decline.
** Depending on your perspective, the Fremen could be a deconstruction of the Noble Savage trope. Their society is characterized by senseless internal violence, such as duels, inheretance of women by duel victors, and [[KlingonPromotion succession through killing]]. When Paul assumes the role of Emperor, the Fremen descend on recalcitrant planets, [[RapePillageAndBurn slaughtering and ravaging]] the inhabitants. This from a people who lamented their own unjust oppression for centuries.
* NoBloodForPhlebotinum: The Atreides and Harkonnens end their millennia-long feud over the control of Arrakis, though there were many subtexts.
* NobodyHereButUsBirds: Played straight in ''Dune''. The Fremen use bird calls to communicate with each other: "Jessica heard... the distant bird calls that Stilgar had said were the signals of his watchmen."
* NonverbalMiscommunication: Duke Leto makes an offer to Stilgar, and in response Stilgar spits on the table. Leto's men rise to defend his honor, before Duncan Idaho tells them it's a cultural sign of respect due to the importance of water.
* NoOneCouldSurviveThat: Paul and Jessica are able to escape their Harkonnen pursuers by piloting an aircraft into a Coriolis storm, a massive sandstorm with winds over 400 kph. Everyone agrees (with good reason) that they are "certainly dead", which turns out to be a huge mistake.
** Made more ironic when the Baron chews out his lieutenant for being so GenreBlind while his private thoughts reveal that he fully believes it too.
* NoTranshumanismAllowed: Both subverted and played straight. Deliberate breeding programs are used to create humans with intelligence, reflexes, lifespan, capacity higher consciousness and physical capabilities far beyond those of current-day humans, but a religious taboo is kept in place on genetically engineering anything recognizably inhuman or unable to interbreed back into the larger human population. Thus, the characters and societies remain human while simultaneously having greater advancements over modern man than modern man has over homo erectus. The Tleilaxu, however, have no religious taboo on inhumanity and gleefully make a living selling inhuman humans genetically-engineered for specific purposes.
* NotQuiteDead: Paul and Jessica.
--> ''Never count a human dead unless you've [[NeverFoundTheBody seen the body]]. And even then you can make a mistake.''
* NoWomansLand: In general, the Dune universe is patriarchal outside of the Bene Geserit sisterhood, with women exposed to socially sanctioned subordination and violence.
** Fremen society is patriarchal, and even though Fremen women are strong and fearless, they're still treated like subordinates. For example, a man dying at the hands of a woman is considered embarassing, as Chani notes when she kills a man who wanted to duel with Paul in the first novel. Sietch leaders are always male. Finally, male duel victors inherit the wives of their defeated foes as spoils of war, with the wives having no say in the matter. Jamis killed Harah's first husband in a duel for the stated purpose of taking Harah for his wife.
** Slavery, sexual or otherwise, is an accepted practice in the Dune universe. Irulan recounts the story of secretly seeing Fenring offer Emperor Shaddam a female sex slave, only for Shaddam to politely refuse. Feyd also has several female sex slaves (but, to be fair, the Baron has male sex slaves as well).
** The noble houses of Dune are rigidly patriarchal, headed only by men. Female nobles and concubines do find ways to manipulate events, but it is always behind the scenes. The noble houses also practice arranged marriage, or in Irulan's case, forced marriage.
** Even the all-female Bene Geserit sisterhood doesn't fully escape this trope. Granted, Reverend Mothers wield a great deal of power, and the sisterhood provides women with elite training and avenues for getting ahead. However, the sisterhood also exerts rigid control over initiates' sexual and reproductive lives for the sake of its selective breeding program, deciding who they will marry, who they will have sex with, and when and if they will bear children. The idea that initiates might have other plans is never considered.
** Perhaps the most horrific example of this trope is the story behind the Tleilaxu's axlotl tanks.
* NumberedHomeworld: The planet Ix (pronounced as spelled) developed from millennia of language-development to the point that the original prefix was lost, and Ix came to be pronounced as a word rather than as "IX", or 9 in Roman numerals.
* NotSoDifferent: The most obvious example is Paul Atreides and Feyd-Rautha Harkonnen. A more poignant example occurs at the end of the first book between Paul Atreides and Hasimir Fenring.
* NukeEm: Almost all of the Great Houses keep stockpiles of "atomics" as a tool of last resort. However, under the "Great Convention", the rules of house warfare in ''Dune'', the use of nuclear weapons against humans is grounds for [[EarthShatteringKaboom planetary annihilation]]. Of course it helps in the context of the novel that humanity's eggs are in many, many baskets. In the climax, Paul blows a hole in the Shield Wall with one, arguing he is targeting a terrain feature, not people. Gurney Halleck notes that that's a rather fine point; Paul's response is that the Guild ships in orbit will take any point to avoid having to destroy Arrakis.
** Why are they kept? For mutual deterrence and for use against hostile aliens (though the exact phraseology is "other intelligence", and given what happens in the prequels, this intelligence [[spoiler: need not be organic]]).
%%* NurtureOverNature
%%* TheObiWan: Thufir Hawat.
* ObfuscatingStupidity: Count Hasimir Fenring definitely counts as one of those. 'Umm-ah-hm-mm-mm', indeed! He completely loses the affect/speech impediment when in private conversation about the Emperor's orders with the Baron.
** The Baron also describes him as "a killer with the manners of a rabbit ... the most dangerous kind."
* OccultBlueEyes: The influence of Spice turns people's eyes an unnatural bright blue. The turning blue is implied to be a normal biological reaction of humans exposed to spice. However Spice also gives psionic abilities to at least some humans which links the two together in people's minds.
* OldRetainer: Paul has not one, but three Old Retainers -- Gurney Halleck, Duncan Idaho (though he's not so old), and Thufir Hawat.
* OmniscientMoralityLicense: Paul
--> "Remember, we speak now of the Muad'Dib who ordered battle drums made from his enemies' skins, the Muad'Dib who denied the conventions of his ducal past with a [[HandWave wave of the hand]], saying merely: "I am [[TheChosenOne the Kwisatz Haderach]]. [[OmniscientMoralityLicense That is reason enough]]."\\
(the final Irulan quote in the first book)
** Considering how much Paul angsted over trying to stop the jihad, it's possible that if he ''did'' say that, he was just being ironic.
* OnceAnEpisode: The Litany Against Fear, which is recited in its entirely at least once in every one of the original books (not all the prequels and sequels, though).
* OneProductPlanet: Perhaps the TropeCodifier, with the major worlds known for producing a major product. Dune itself is the only source of Spice, Giedi Prime a Factory world, Ix and Richese are Science worlds, Telixau as a Underworld (selling taboo technology), Caladan is a Farm world, Kaitain is the Capital, Salusa Secundus is ostensibly a Penal colony but really a Military world. Tupile is a Service world, providing protection for exiled families.
* OnlyTheKnowledgableMayPass: Lady Jessica is able to gain acceptance among the Fremen by using phrases planted in their culture by the Missionaria Protectiva (which manipulates religious beliefs to benefit the Bene Gesserit).
* OrganicTechnology: Due to the prohibitions against advanced technology, humans were forced to develop their own talents to fill the void. Mentats act as human-computers, the Spacing Guild navigates space through prescience in the place of computers, and the Bene Tleilax [[spoiler:use their females as wombs for their genetic products]].
* OurGhostsAreDifferent: A Bene Gesserit's "ancestral egos" can become troublesome. [[spoiler: Alia finds this out the hard way.]]
* OutgrownSuchSillySuperstitions: Mostly averted, but also played a bit around with.
** For example, one of the appendices to ''Dune'' includes a Bene Gesserit report detailing the various ways in which the Bene Gesserit should have caught on to Paul Atreides being the Kwisatz Haderach '''long''' before he took the name Muad'Dib, passed through the Spice Agony to actually gain the powers of the Kwisatz Haderach, and conquered the known universe. The report comes to the conclusion that since all involved parties so incredibly failed to see the obvious, ''some power must have been manipulating them in a plan to bring Muad'Dib to power''. This power is never specified, but the book's clear religious tones imply that God may have given humanity the Messiah it so foolishly wanted.
** A major theme of the novels is that cultural and religious influences don't ever really go away; they just go underground and surface later. Examples of this include the Fremen and Tleilaxu as well as the Jews.
** An introduction to religion is one of the elements in cultivating a mentat, to allow them to understand the logical fallacies and traps involved.
* PaintingTheMedium: Some words like "SPICE" and "VOICE" tend to be printed in capital block letters to give them a sort of mystical echo (see above for DEATH in the Discworld novels). However, there are no capital letters in the Hebrew language, so the Hebrew translation has these words printed in bold and in a larger typeface than the rest of the sentence. This method makes them even more creepy and resfonant than the original, if at all possible.
* PatchworkStory: ''Dune'' itself was originally published as two shorter works in ''Analog'' magazine before being expanded and reworked as a novel.
* PenalColony: Salusa Secundus was one of these, as well as a DeathWorld with the intention of creating SuperSoldiers.
* PeopleJars: Used and subverted in which genetic clones (and other creatures) are grown in 'Axlotl tanks'. [[spoiler:The tanks are revealed to be 'people' as well.]]
* PetTheDog: Feyd-Rautha's honorable treatment of the corpse of the Atreides gladiator he fought. Was in part a publicity stunt, but he realises the narrowness of his escape.
* PhlebotinumOverload: Shield and lasgun interaction results in nuclear explosions.
* PlaceBeyondTime: Reverend Mothers are able to enter a spice-enduced trance in which time effectively stops, allowing them to transfer memories, consult with their maternal ancestors, alter their body chemistry, and see through time. When Paul Atreides takes the Water of Life, he gains this ability to such an extent that he experiences the NOW: "The future and the past! All at once. All the same."
* ThePlan: Everyone. Some work, some don't. See below.
* PlanetaryRomance : Both a classic example and a {{Deconstruction}}.
* PlanetOfHats: Shows up more in the prequels and games than the original novels. For instance, Houses Ix and Richese's hat is being [[GadgeteerGenius gadgeteer geniuses]].
* PoisonedWeapons:
** The gom jabbar, a poisoned needle used by Bene Gesserit Proctors in their death-alternative test of human awareness, is a "specific poison needle tipped with meta-cyanide".
** The first book has Paul facing Feyd Rautha at the end duel. Feyd has a poisoned spring needle in his belt. They both also have poisoned blades, Feyd's with a soporific and Paul's with acid.
** Alia kills the Baron Harkonnen with a poisoned needle during the confusion.
** Crysknives often have a groove in them where poison can be applied.
** When fighting gladiators, Feyd-Rautha Harkonnen was allowed to use a short knife with a poisoned blade. During his hundredth bout, he secretly put the poison on his long knife instead, which allowed him to win the match.
** Poisoning is so widespread and common between (and possibly ''within'') the noble houses that it is considered to be its own science.
* PollutedWasteland: The dark world Giedi Prime, the home planet of the Harkonnens, is heavily pollluted from over-industrialization. One of the final two books makes a point that this was so bad that now, over 8,000 years after the Harkonnens were overthrown, the ground will ''never'' lose its greasy texture.
* PraetorianGuard: The Imperial Sardaukar. For Paul, the Fedaykin.
* PrescienceIsPredictable: One of the core themes of the main series. Indeed, this could be the TropeCodifier for all modern uses.
* ThePromisedLand: The Fremen believe they can turn Arrakis into this with some ecological engineering.
* PropheciesAreAlwaysRight: Justified -- prophecy actually controls reality.
* ProphecyTwist: The Bene Gesserit's Missionaria Protectiva intentionally seeds Galactic society with messianic prophecies to provide a ready-made belief structure for their planned Kwisatz Haderach. The twist occurs when the real thing comes along and manipulates the prophecy to make himself Emperor of the known universe. Oops. (Hint: when trying to create a prophet, allow for the fact that the prophet will figure out what you're doing and may try to take it away from you.)
* AProtagonistShallLeadThem: Paul
* ProudWarriorRaceGuy: The Fremen, deliberately contrasted with the Sardaukar who are more of a PraetorianGuard. Both in turn start out BadAss but end up succumbing to arrogance and pleasure, allowing them to be overcome by a superior force -- Fremen for the Sardukar.
* PsychicPowers: Prescience (precognition), Other Memory and memory transfers.
* PsychoSerum[=/=]SuperSerum: The Spice is both a boon and bane for humanity, politically, culturally, and biologically.
[[/folder]]

[[folder: Q-Z]]
* [[TheButlerDidIt The Rabbi Did It]]
* RatedMForManly
* RazorFloss: Shigawire.
* ReallySevenHundredYearsOld: Mainly due to the effects of the Spice, many people extend their life far greater than would be possible without. The Emperor Shaddam is described by his daughter Princess Irulan as looking around 50, though being in his late '80s. He dies due to work-related stress rather than old age.
** The Bene Gesserit take this to the extremes. With complete control over their biochemical makeup, they can slow down or speed up the aging process at will or choose to ''look'' younger or older while chemically being another age. They rarely take advantage of this, however, because such power can be intoxicating and dangerous. If someone outside the inner-Bene Gesserit organization were to notice the true extent of their powers it could lead to their destruction from superstitious outsiders as well as loss of [[TheManBehindTheMan influence over the Empire]].
** The pre-Born count in a different way. While chemically and physically true to their age, exposure to the Water of Life in the womb awakens their GeneticMemory. This leads to a personality being composed solely of their complete lineage of ego memories, upwards of hundreds of thousands of generations.
* ReallyGetsAround: Arguably subverted by the Bene Gesserit and Honored Matres, whom really do have many sex partners, but only because the Bene Gesserit are engaged in a subtle breeding program and the Honored Matres use their sexuality as a form of conditioning. Both only do it professionally.
** Duncan Idaho more so. See TheCasanova above.
* RedScare: The Harkonnens are apparently of Russian descent. Now remember that the books came out during the UsefulNotes/ColdWar.
* ReinforceField: The bones of a sandworm are extremely brittle. However, their crystalline structure can be made as tough as diamond with a weak bioelectric field, such as one produced by a living creature, including the sandworm itself. When a sandworm is killed, its skeletal structure collapses and rapidly erodes. The same is true for crysknives, weapons made out of sandworm's teeth.
* RetCon: In the first novel, the Reverend Mother power of "other memory" was bestowed by a kind of "download" of all the memories of another Reverend Mother -- only that Reverend Mother's memories, or the memories of previous Reverend Mothers she'd downloaded, were accessible.
** Some difference was made between "Ancestral Memory" and "Other Memory". AM is awakened genetic memory, while OM is transferred genetic memory. The later books use OM as a catch-all for both.
** Other changes that might be considered a RetCon within the first 3 books included the appearance of Guild Navigators (at the end of ''Dune'', they were perfectly normal-looking humans except for the blue-within-blue eyes that they hid behind contact lenses), and the factors that make a child "pre-born" ("No no no, Alia wasn't pre-born because she downloaded the dying Reverend Mother's memories while she was still in the womb, she was pre-born because her mom was addicted to the Spice!")
** The Butlerian Jihad. Originally, a reference to Samuel Butler and his ''Darwin among the Machines''. Retconned -- possibly unintentionally -- by Brian Herbert to refer to the death of one "Manion Butler" instead.
* RetroUpgrade: Both laser weapons and shielding technology have been well developed, but due to the {{Technobabble}} behind them if one meets the other then a catastrophic explosion occurs. Most warfare is waged through unconventional projectile weapons -- or through simple knife and swordplay.
* RewardedAsATraitorDeserves: Dr. Wellington Yueh betrays the House Atreides for the sake of freeing [[IHaveYourWife his wife]] from Harkonnen [[ColdBloodedTorture tortures]]. Yueh is an interesting case in that he walks into it with his eyes mostly open -- he strongly suspects that Wanna has been ReleasedToElsewhere and is betraying everyone just to make ''sure''. He knows he'll only be killed for his troubles once he's [[YouHaveOutlivedYourUsefulness outlived his usefulness]], and he does everything in his power to help House Atreides survive his betrayal. Hell, he even sets up a trap of his own to kill Baron Harkonnen in retaliation, and it almost succeeds.
--> "You think... you have defeated me? You think I did not know... what I bought... for my Wanna?"
** Poor old Wellington kinda gets the short end of the stick in the universe; despite his best-of-intentions betrayal, in subsequent books it is made clear that history remembers him as ''[[FindingJudas worse than Judas]]'' and for thousands of years his name serves as a byword for unconscionable treachery.
** And then he tries to right his wrongs in the sequels, to disastrous results (he does finally get it right at the end, however, to the point where the reborn Atreides have forgiven him).
* RiteOfPassage: The gom jabbar stands out, though is only done on Bene Gesserit and Kwisatz Haderach-hopefuls. Better examples exist among the Fremen, such as first hooking a sandworm (at twelve).
* RobotWar: The "Butlerian Jihad," which is referenced in the very first book but wasn't fleshed out in any detail, [[FanonDiscontinuity certainly not by the prequels]]. Led to a core tenet of civilization: "[[AIIsACrapshoot thou shalt not make a machine in the likeness of a man's mind]]"-- by which we mean, No Computers Allowed. Various schools of mental training, such as the Mentats and the Bene Gesserit, were founded to produce humans who can do what Pentiums did (and eventually went far beyond that).
** Of course it's never made clear (in the original series, which predates widespread computer use in RealLife anyway) how advanced the computer has to be before it's forbidden, nor really what precisely it is that Mentats do most of the time.
* RockBeatsLaser: This is an example when the trope is totally justified. Because of shields, the Sardaukar use knives and swords. The Fremen use knives because that's what they have. When the Sardaukar come to Arrakis, they have to turn their shields off. So it's not rocks beating lasers, but more along the lines of your lasers have stopped working, and the locals are better at using rocks than you are.
* RoyalBlood: Thanks to eugenics.
* RoyalsWhoActuallyDoSomething: The royalty/nobility in ''Dune'' basically do nothing ''but'' scheme against one another and actually ruling their domains. Court functions and leisure occasions seem to only serve the purpose of furthering their schemes for power.
** Averted at least by Leto I Atreides, who was an active governor of Arrakis and sought to bring reform to the everyday masses in the wake of the corrupt Harkkonnen administration. Also averted by Feyd Rautha, who was sent to ''deliberately'' be a despot and oppress the people of Arrakis, so that they would "welcome" their liberator, the Baron.
* SacredScripture: The "Orange Catholic Bible".
* SandIsWater:
** The sandworms "swim" through sand by literally eating it and passing it through their system, avoiding most of the implausibilities of it. This generates intense heat that triggers some extremely powerful electromagnetic storms from all the friction.
** Played even straighter with tidal dust basins, basins of dust so deep they have tides, which an unwary traveler can wander into and die.
* SandWorm: Possibly the TropeMaker.
* SchizoTech: Many of the apparently anachronistic elements of technology are justified by the book's extremely-detailed backstory.
* SchoolOfSeduction: Although it's not the entire curriculum, it features in Bene Gesserit training.
* ScienceIsBad: This is the view of the Butlerians, whose goal is to force humanity to go back to manual labor and destroy any advanced technology. While they claim to only be following the tenets established during the Butlerian Jihad (i.e. no computers), they actually destroy any technology they feel is wrong and will burn down a medical school because they believe that if you're sick, then it's God's will that you die. Even though the leader of the movement would have died without advanced medical care when his legs were blown off. The Butlerians also have no qualms about using starships to achieve their goals, even though they admit it's a necessary evil.
* SciFiWritersHaveNoSenseOfScale, timewise: Justified, as there is GeneticMemory that allows the denizens of the past to inform the future (not to mention a millennia old absolute despot worshipped as God who intentionally holds things in stasis). Not so much justified in the prequels, where there is no such explanation yet the elements of the later series leap fully formed into existence and apparently remain unchanged for over ''ten thousand years''.

* ScryVsScry: A few times in ''Dune''. Bonus points for the foresight itself being a trap; seeing a future locks it in among all the possible futures, so it's avoidable ''unless'' you know it's coming.
* SecondHandStorytelling: Interesting scenes or important plot points, such as the initial journey to the planet Arrakis in a spaceship of the mysterious Navigators Guild or Paul Atreides drinking the lethal Water of Life, are either touched on only fleetingly or narrated by characters in retrospect, several weeks later. The chapter simply ends and cuts away from the action about to unfold to a different scene in the next chapter, with characters sitting around their camp fire and telling each other what happened.
* SelfFulfillingProphecy: ''Dune'' takes this trope quite literally. "True" prophets (Paul Atreides and his descendants) don't predict the future so much as create it, locking themselves (and everyone else) into an inescapable destiny.
* SettingUpdate: ''Dune'' is ''Film/LawrenceOfArabia'' [-IN SPACE! WITH PSYCHOTROPIC DRUGS-]!
* ShoutOut:
** A "cone of silence" shields Count Fenring's conversation with Baron Harkonnen. A reference to a 1960 British film, ''Cone of Silence''.
** There are at least two to Creator/PoulAnderson: an appendix to ''Dune'' mentions a biography of Alia written by "Pander Oulson".
** There's a reference to author Creator/JackVance (full name John Holbrook Vance) in ''Dune''. In the "Terminology of the Imperium" entry for Krimskell Fiber the author of "The Strangler Vines of Ecaz" is given as "Holjance Vohnbrook".
* ShownTheirWork:
** With regards to the ecology of Dune, as well as the Arabic-based Fremen language, which are the two most well-researched aspects of the entire first book and possibly series. The later history and philosophy, both real and imagined, are near-equally amazing. It's also one of the few series that does not completely screw up Judaism.
** When Jessica consumes the psychotropic Water of Life, she identifies it as a tryptamine compound. Tryptamines are a family of chemicals that include hallucinogens such as DMT, psilocin, and bufotenin, so Herbert did his research on mind-altering drugs.
* SignificantMonogram: The Emperor's personal guard of fanatically-loyal elite soldiers are trained and raised on a planet called '''S'''alusa '''S'''ecundus. GodwinsLaw, anyone?
* SingleBiomePlanet: {{Justified|Trope}}, as Dune became a desert planet thanks to the sandworms/sandtrout species basically {{terraform}}ing it.
** Since Arrakis is a desert planet ''arenaforming'' might be a more appropriate term.
* SolidGoldPoop: Spice is formed via the excretions of the sand trout mixed with water.
* SonicStunner
* SpaceAgeStasis: Society is partially stagnant due to the religious proscriptions against thinking machines, robotics, and computers set up after the Butlerian Jihad, which keeps things from advancing too much. Spice does this as well, since its properties allow for expanded lifetimes and space folding, so there was no desire to experiment and find alternatives. Finally, the Bene Gesserit and Guild collaborated to set up a feudalistic government with full knowledge that it would be easier to control..
* SpaceOpera: Exactly.
* TheSpartanWay[=/=]TrainingFromHell: The Emperor's Sardaukar. To a certain extent the Fremen also -- their culture is more survivalist than purely martial, but on a man-for-man level it seems to yield a superior result.
* SpeculativeFiction
* SpiceOfLife: The Spice itself, which is the most valued commodity in the entire universe. To a lesser extent, water on Arrakis (the planet where spice is harvested). Frank wrote both as a metaphor for water itself and oil.
* SpiritualSuccessor: ''Dune'' shares various concepts and themes with Frank Herbert's novel ''The Godmakers''. Published as a separate novel in 1970, the four original short stories were all published before ''Dune'' was even written. Includes Axlotl-tanks, Plaz, and even what could be considered a young version of the Bene Gesserit.
* TheSpock: Mentats. Although not all of them are by any means moral and logical.
* StalkerWithATestTube: This is basically the Modus Operandi of the Bene Gesserit Sisterhood -- breeding together people with the right genes in order to produce the Kwizatch Haderach... whether that means matchmaking, blackmail, or outright rape is of little concern to them as long as the right children result.
* StandardTimeUnits: Years are known as "Standard years", or SY, and are described as being about 20 hours less than the "so-called primitive year".
* StandardSciFiHistory: The background history of the Imperium tends to follow this trend. The Buterlian Jihad serves the role of World War III by resetting the political and technological situation. The Corrino-led Imperium serves as the First Empire.
* StarfishAliens: The sandworms, which are gigantic (as in up-to-half-kilometer-long) wormlike creatures that live in the desert. They also have a larval form, which begin as microbial "sand plankton" that serve as food to the adults, and grow into a small roughly diamond-shaped form called sandtrout AKA "Little Makers". The sandtrout are later revealed to seal away all the water on the planet, which is highly toxic to the adult form, and secrete the precursors to the addictive and PsychicPowers-granting Spice, which triggers their transformation into the sandworm "Makers".
** They also inhale carbon dioxide and breathe out fresh oxygen, working as a substitute for the nearly non-existant plantlife on Arrakis. This also {{justifie|dTrope}}s why such a SingleBiomePlanet can have a breathable atmosphere. The byproducts of the worms are suspiciously Terran-friendly indeed. Various characters {{lampshade|Hanging}} this occasionally, even suggesting the idea that sandworms may be in fact {{Lost|Technology}} OrganicTechnology for terraforming planets ([[GeneticEngineeringIsTheNewNuke created]] [[NoPlansNoPrototypeNoBackup a long time ago]] by humans, presumably).
* SuperDetailedFightNarration
* SuperSoldiers:
** The Sardaukar, the original Fremen when organized
* SurvivalMantra: See the page quote.
* SwordFight: Swords and knives are the main weapons used in ground combat. {{Justified|Trope}}: [[DeflectorShields shields]] stop projectile weapons, and [[PhlebotinumOverload explode like nukes]] when attacked with [[EnergyWeapon lasguns]].
** Inverted in that shields attract the worms so they can't really be used (at least by ground forces) and Baron Harkonnen successfully uses conventional artillery in his takeover to seal Atreides forces in caves to die. (The Fremen turn this to their own advantage later.)
* [[TakeOverTheWorld Take Over The Universe]]. This is what the ''hero'' does. By threatening to destroy civilization, no less. Of course, the alternative is far, far worse.
* TakeThat with this passage:
-->As far back as the Old Empire there had been a pejorative label for the small rich and Families Minor arising from the knowledge of a rare wood's value. 'He's a [[Franchise/StarWars three P-O]],' they said, meaning that such a person surrounded himself with cheap copies made from declasse substances.
* TakingYouWithMe: Duke Leto tries to kill both himself and Baron Harkonnen with a poison gas-filled tooth. The Baron, however, managed to survive; not only did he have his shield turned on, he was standing right in front of a convenient emergency door. Leto at least took down the Baron's Mentat and several others.
* TalkingThroughTechnique: The HandSignals. Count Fenring's annoying vocal tics might also qualify, as we later learn that they're a secret language understood only by the Count and his (Bene Gesserit) wife.
* TalkingYourWayOut: Thufir Hawat, captured by Baron Vladimir Harkonnen's forces and forced to work for him, plays him off of his nephew, Feyd Rautha. Feyd makes a rash attempt (suggested by Thufir) to assassinate his uncle, and the Baron is forced to consider executing his only legitimate heir. Thufir does this more for vengeance and loyalty to his prior liege than for escape, which the Baron ensured would be a fatal endeavor; the Baron barely manages to work his way out of the dilemma by denying Feyd the governorship of the planet the Harkonnens took from Thufir's old master. Earlier in the book, Paul and Jessica use the Voice to get their Harkonnen guards to kill each other.
* TangledFamilyTree: Courtesy largely of the Bene Gesserit breeding program. The Lady Jessica is herself Vladimir Harkonnen's flesh-and-blood daughter, and Paul is by extension his grandson.
* TenLittleMurderVictims: Suspicion briefly falls on Jessica as being a mole for the Harkonnens, though the Duke angrily discards such accusations.
* TenThousandYears: The original novel takes place in the year 10,191 AG, after the Spacing Guild was founded and the Imperium established.
* {{Terraform}}[=/=]WeatherControlMachine: The sandworms managed to turn the once-lush and verdant Arrakis into a desert-world. Paul promises to transform Arrakis into a paradise through use of weather satellites, and makes good with signs of life and vegetation taking hold of the planet at an exponential rate.
* ThemeNaming: (Nearly) all the Bene Gesserit have names of the form Something-us (Female Name) (Surname), which is slightly odd considering -us is a male suffix.
* TheyWereHoldingYouBack: What's done to Thufir Hawat.
* ToThePain: Feyd-Rautha
* TranquillizerDart: This comes up when Leto finds the Shadout Mapes dying on the floor in the palace and [[spoiler: Doctor Yueh]] shoots him with a dart (at the start of the Harkonnens' raid on Arrakis). [[spoiler: Yueh is the family physician, so he knows the duke's body mass, metabolism, and so on.]] Some reference to the drugging of Jessica and Paul is also made; the Baron stands over Jessica as she comes to and tells her, "The drug was timed." This admission tells her the traitor has detailed and intimate knowledge of her vital statistics, and she deduces his identity seconds later.
* TrapIsTheOnlyOption: Leto explains to his son that their being given Arrakis is a trap by the Emperor, including the classic line, "Knowing there is a trap is the first step in evading it." Where he fails is in anticipating the magnitude of the forces poised to destroy him (and he isn't the only one).
* TruthSerum: Verite, a will-destroying narcotic from the planet Ecaz that renders a person incapable of falsehood..
* {{Ubermensch}}: Paul-Muad'Dib. "I am the Kwisatz Haderach. That is reason enough." His son takes it up a few thousand notches.
* UnderdogsNeverLose: House Atreides and the Fremen
* UnhappyMedium: Paul Muad'Dib eventually discovers that having prescience is a trap, forcing you into a predetermined path.
* {{Unobtainium}}: The Spice.
* UnusualEuphemism: ''Dune'', at least on one occasion, replaced the f-bomb with "floggin'". Frank was perfectly happy to use other cuss words through the series, but even "flog" isn't used again for the rest of the series.
* UnusualUserInterface: The heavily-mutated Guild Navigators interfacing with space-time to plot the course the navigating machines will take.
* UnwantedFalseFaith: The misguided Fremen-led state religion and personality cult that forms around Paul. The young Atreides actually does a damned good effort at rejecting and ridiculing it at first, but later accepts it after his spice-induced visions convince him there might be a grain of truth in the myth. All the more tragic when the reader realizes the whole Fremen legend about the Mahdi is just a Bene Gesserit hoax cleverly implanted into actual Fremen mythology. (Of course Paul ''knows'' this.)
* VariantChess: From the Terminology of the Imperium:
-->"CHEOPS: pyramid chess; nine-level chess with the double object of putting your queen at the apex and the opponent's king in check."
** Apparently it has evolved into an actual variant of chess that is played by some people.
* ViewersAreGeniuses: The universe features wheels-within-wheels plots and dense mythology, although the poetic descriptions can make the book enjoyable even to those who fail to understand it.
* VillainousGlutton:
** The Baron. A sensation-hedonist, he purposefully eats as much as he can both because he enjoys the taste and sensation of eating and because it amuses him that his grotesquely fat body disgusts others.
* VisionQuest: Meeting one's spiritual Gom Jabbar is something like this.
* VoiceOfTheLegion: The billions of ego memories within genetic memory-awakened individuals can appear like this, especially to the pre-born.
* WarForFunAndProfit: The Atreides and Harkonnen feud erupts into this when Arrakis becomes involved, all over production of the spice. For the Harkonnens, it's just as fun as it is profitable.
* WarfareRegression: Thanks to the Holtzman fields, warfare is limited to melee combat. Fast moving bullets and artillery shells are blocked by such shields. Of course, one could wish to shoot the shield with a laser weapon, if they don't mind the resulting nuclear explosion that destroys them.
* WarriorPoet: Gurney Halleck. He is a musician and philosopher with seemingly infinite supply of witticisms for any occasion. He is also a remorseless killer, perfectly willing to cut any Harkonnen he comes across (or anyone who gets on the wrong side of Duke Leto for that matter) into pieces.
---> Duke Leto: "Someday I'll catch that man without a quotation and he'll look undressed."
** Paul becomes something like this, if the many quotes attributed to him in the chapter epigraphs were actually from him. Then again, Gurney trained Paul.
* WeaponizedExhaust: The Emperor is both enraged and terrified when he hears that his [[SuperSoldier Sardaukar]] only just ''barely'' escaped with their lives by doing this against a settlement of women, children, and elderly.
* WiseBeyondTheirYears: Paul is described as this in the first book, justified due to the intensive training he was given as heir to House Atreides. The pre-born, due to awakened genetic memory in the womb, never develop a personality of their own and are entirely intelligent even before birth.
* TheWorfEffect: The Imperial Sardaukar are the most terrifying and deadly warriors in the known universe, and their only real purpose is to establish how much deadlier the Fremen are by getting their asses handed to them at every encounter. When they attack Paul's sietch, they take devastating losses fighting Fremen who are not even warriors.
* WorldBuilding: One of the most developed examples, right here with Tolkien. Considered to be the very ''first'' science fiction novel of its kind to do this ("six years of research ahead of it", according to a [[WordOfGod radio interview]] the author gave shortly before his death.
* WorldHalfEmpty: Sure it makes for an interesting setting, but would you really want to live on Arrakis? Hell, would you even want to live in this universe?
** Well, by all accounts, Caladan is nice. So is Tupile, a system in an undisclosed location, maintained by the Spacing Guild for the benefit of any good customers who may need (or want) political asylum.
* {{Wormsign}}: The TropeNamer.
* YouAreTheTranslatedForeignWord: Paul becomes the Kwisatz Haderach, a term the Bene Gesserit describe as meaning "Shortening of the Way". This is in fact derived from the Hebrew "k'fitzat haderech", which means the same thing.
** "k'fitzat haderech" translates literally to "shortcut".
** He is also the Mahdi for the Fremen, which is the same word Muslims give their awaited messiah.
* YouKillItYouBoughtIt: Fremen can challenge each other to duels to the death, with the winner being entitled to the loser's water and their wife. This extends to the responsibility for caring for the widow and her children.
* YouHaveOutlivedYourUsefulness: The Baron Vladimir Harkonnen [[IHaveYourWife has Yueh's wife kidnapped]] to coerce him into betraying the house of Atreides, then [[IGaveMyWord fulfills his promise]] to [[ReleasedToElsewhere "reunite"]] [[RewardedAsATraitorDeserves the two of them]].
* YouShallNotPass: Duncan Idaho sacrifices himself to hold off a flood of Imperial Sardaukar elite troopers, while Paul Atreides makes good his escape. In the sequel, it's revealed that while he did indeed die, the surviving Sardaukar were so impressed with his ImplausibleFencingPowers that they preserved his body, later having it resurrected as a "[[CloningBlues Ghola]]"... and that, as it turns out, has some [[ForWantOfANail extremely far-reaching effects]] on the ''Dune'' universe.\\
\\
It is later revealed in ''Children of Dune'' that during his last stand in ''Dune'' Idaho slew ''nineteen'' Sardaukar -- and at the height of their power and training, a single Sardaukar was reportedly a match for ten ordinary house regulars and even a Bene Gesserit adept.
* YouSaidYouWouldLetThemGo: Yueh makes a deal with the Baron for the return of his wife, Wanna, but she was already dead. Luckily, he [[GenreSavvy saw it coming]] and [[TakingYouWithMe prepared accordingly]]. [[spoiler:That he largely fails is a stroke of terribly bad luck.]]
[[/folder]]



!!Other adaptations provide examples of:

[[folder:A-Z]]
* AdaptedOut:
** Cryo's 1992 adventure game also removed Irulan (although she appears in the opening FMV in the CD version), Shadout Mapes, Piter, and, probably most majorly, Yueh, and while the Bene Gesserit and Spacing Guild are mentioned, none of their representatives appear.

* AscendedExtra:
** Harah in Cryo's 1992 video game adaptation.
* BlackAndWhiteMorality: [[LighterAndSofter In contrast with the books]], the movies and video games set in the ''Dune'' universe tend to depict the Atreides and the Fremen as the unambiguously good guys, and the Harkonnen and the Corrino as the bad guys.
* TheBoardGame: The 1979 ''Dune'' board game, designed by Eon and published by Avalon Hill, is widely considered a classic. That didn't stop them from allowing Parker Brothers to make yet another ''Dune'' game in 1984, which hardly anyone cares about.
* CanonForeigner: House Ordos, mentioned once in the semi-canon Dune Encyclopaedia, was picked by Westwood Studios to become the third faction in their ''Dune'' series of games. In contrast to Atreides being noble and Harkonnen being evil, the Ordos were made mysterious, insidious, and rumoured to experiment with forbidden technology.
** Ironically, this makes them a dead ringer for the Canon-compliant Ixians, but no adaptation has ever emphasized the latter.
* SparedByTheAdaptation: Duncan Idaho, Thufir Hawat and Liet Kynes survive in the Cryo game. Duke Leto, however, still bites it.
* WarfareRegression:
** Averted in ''EmperorBattleForDune'', where guns, cannons, and artillery are not affected by shields, even when not fighting on Arrakis.
[[/folder]]
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