The [[YMMV/HowTheGrinchStoleChristmas2000 2000 film]] and [[YMMV/TheGrinch2018 2018 film]] have their own pages.

!! The original book:

* AlternativeCharacterInterpretation: Everyone knows the Grinch hated Christmas, the whole Christmas season. Now please don’t ask why, because nobody quite knows the reason. Is it because he was a {{Jerkass}} whose heart was two sizes too small and hated seeing the Whos having a good time? Is it because he hates how commercialized it is? Or is there a deeper reason for his dislike of the season? While the original book and the '60s animated special suggest that it's the former two, both of the theatrical films go for the latter route, with both the live action film and the CGI animated film revealing that his hatred comes from being bullied and/or rejected as a child. Some have suggested that he never hated Christmas ''itself'', but rather, his hatred of the holiday was a scapegoat for his true source of hatred, the Whos. Yet others assume it's simpler, and he really is just irritated by how noisy the Whos are.
* AngstWhatAngst: While it's meant to be deliberate, it's not hard to agree with the Grinch as to how the Whos can still be cheerful and lively despite having been robbed by him the night prior, which is normally a very unpleasant, if not traumatic experience. The live action movie does attempt to address this by showing that the Whos ''were'' upset about their gifts being stolen, until Cindy reminds them of the TrueMeaningOfChristmas. Even if you don't accept the movie as canon, the Grinch doesn't see how the Whos acted before they started singing, or why they were singing, so it's open to AlternateCharacterInterpretation whether the angst happened out of sight.
* EnsembleDarkHorse: Cindy-Lou Who only appears once in the original book and in a couple of scenes in the '60s TV special and was far from a prominent character in either one (and has not appeared again in any of the later stories featuring the Grinch), but her [[{{Moe}} adorable appearance]] (particularly in the animated special), her [[ChildrenAreInnocent innocent personality]], and her [[SignatureScene encounter with the Grinch]] quickly made her a very popular character amongst readers. It is likely because of her popularity that she would gain a [[AscendedExtra far larger role]] in both of the film adaptations. She would even get her [[ADayInTheLimelight own book dedicated to her]] in 2018.
* {{Fanon}}: Though it's deliberately kept ambiguous about whether or not any of Dr. Seuss' works (that are not direct sequels) are [[SharedUniverse connected]], it is widely theorized that the Whoville in this book is the same Whoville that appears in ''Literature/HortonHearsAWho''. This is helped by the 2000s live action adaptation, which reveals that Whoville, like in ''Horton Hears a Who'', is a MouseWorld that can't been seen by normal eyes (though unlike in ''Horton'', where it was a speck of dust, Whoville in the film is located on a snowflake). It is also helped by the 2008 animated adaptation of ''WesternAnimation/{{Horton Hears A Who|2008}}!'', which features a group of characters that look eerily similar to the Grinch, [[https://m.media-amazon.com/images/M/MV5BZGRkMmRiYTQtMGNkMC00YjFkLWE1MTEtMDFhMTJmMTQ5NWRjXkEyXkFqcGdeQXVyOTc5MDI5NjE@._V1_.jpg green fur and all]].
* ItWasHisSled: The Grinch ''doesn't'' steal Christmas, has a HeelFaceTurn, and ends up SavingChristmas instead. The proliferation of messaging surrounding merchandise and promotion of that harkens to the "Christmas, perhaps, means a little bit more" moral makes it easy to deduce that this is how the story will end even if you've never read it before.
* MagnificentBastard: TheGrinch is a grumpy, bitter creature that hates Christmas—especially all the noise the Whos make—so much that he decides to [[HowTheCharacterStoleChristmas steal it]] from the entire town of Whoville. After [[BadSanta crafting a Santa Claus disguise for himself]] and a reindeer disguise for his dog Max, he enters the Whos' houses one by one while they are asleep and steals their gifts, food, and decorations. When the young Cindy-Lou Who catches the Grinch stealing her family's Christmas tree, he quickly makes up a lie to fool her. After stealing all of Christmas from the Whos, he finds that [[TrueMeaningOfChristmas they can still enjoy Christmas even without them]], which makes him [[HeelRealization see the error of his ways]] and return the stolen gifts and decorations.

!! The 1966 animated special:
* AndYouThoughtItWouldFail: Creator/DrSeuss was initially hesitant about making this special, remembering how badly his attempt to venture [[Film/The5000FingersOfDrT into film]] [[BoxOfficeBomb turned out]] and feared television would produce similar results. Instead, it became one of the most acclaimed Christmas Specials of all time.
* AudienceColoringAdaptation: While the special hasn't displaced the book, there are numerous aspects of the special that are now seen as imperative to the story:
** We challenge anyone to read the book to themself and ''not'' hear Creator/BorisKarloff narrating it. There exists two record productions of the story, one narrated by [[https://www.youtube.com/watch?v=hts_sj-0_14 Zero Mostel]] (made before the cartoon special), and one by [[https://www.youtube.com/watch?v=cuq3AqIjtAg Walter Matthau]] (made ''after'' the special), and both sound particularly ''jarring'' to hear.
** The Grinch's green coloring was an invention of the special -- a somewhat necessary one, as Seuss' original illustrations were in black and white with red accents (at the time the book was published, color printing was still rather limited). Green has been the Grinch's color ever since, to the point where even merchandise drawn in Seuss' original style will often fill him with green just because. There's even a version of the [[{{RetCanon}} original book itself]] that makes him green.
** Likewise, his (in)famous SlasherSmile comes from the special. While the white-furred original does an occasional nasty grin, the animated special chose to exaggerate the animation, which in turn made the smile so memorable that it essentially became the SignatureScene of the film.
** The stage adaptation and both feature-film adaptations made sure to include "Welcome Christmas" and "You're A Mean One, Mr. Grinch," songs that were obviously written for the TV special, simply because audiences would have felt something was missing had they been excluded.
** Max has little presence in the book, and what few illustration appearances he does get implies he is on-board with his owner's schemes as he too puts a hand to an ear to hear the Whos crying. The special's influence means it's hard to think of Max as anything but the Grinch's prominent MinionWithAnFInEvil.
** Cindy Lou Who looks no different from a regular Who in the book aside from a few extra strands of hair, but the special's design is so engraved in everyone's minds that even if an adaptation goes with a different design, she will probably have a full blonde head of hair.
* SugarWiki/AwesomeMusic: TheVillainSucksSong is a classic, and is easily the most famous part of the special.
** Credit must be given to the [[https://www.youtube.com/watch?v=WYRFYujZge4&t=152s additional]] [[https://www.youtube.com/watch?v=_I3VcTiJcs4 music]] by Eugene Poddany.
* CantUnHearIt: Again, Creator/BorisKarloff is '''the''' voice of the Grinch, to which [[ToughActToFollow every successor in the role is compared.]]
* CrackShip: Due to Thurl Ravenscroft voicing Tony the Tiger and singing [[TheVillainSucksSong "You're a Mean One, Mr. Grinch"]], a crack theory suggested that Tony the Tiger and the Grinch had a really messy breakup, leading Tony to write "You're a Mean One, Mr. Grinch" as a spiteful, vitriolic BreakupSong. The ship gained even more steam after a popular and surprisingly well-written fanfic depicting the rekindling of their relationship.
* FirstInstallmentWins: Far more universally beloved than any of the adaptations that followed.
* HilariousInHindsight:
** The line "Why, that Grinch even took the last can of Who Hash." Hash is the name of a dish consisting of chopped meat, potatoes, and fried onions. This was common knowledge back in 1966, but nowadays the word "hash" is more commonly associated with being a slang term for marijuana, making the line a shocking but funny surprise to modern viewers.
** A meta example, when the Special was reissued onto VHS and DVD in 1999, it was paired with the 1970 ‘Horton Hears a Who’ TV special. And they would both be adapted into movies starring Jim Carrey in 2000 and 2008, respectively.
* MagnificentBastard: TheGrinch is as mean and scheming as his original counterpart. Tired of all the noise the Whos make on Christmas, The Grinch decides to steal it, disguising himself as Santa Claus and his dog Max as a reindeer to haul the sleigh he will use to arrive at Whoville. There, The Grinch steals all the decorations, presents, and food in all the houses without waking anyone other than the little girl Cindy Lou Who, for whom he crafts a lie to send her back to bed. Once having finished, The Grinch takes the sleigh with everything stolen to the top of Mount Crumpit to throw it into the abyss, until he discovers that the Whos are still able to celebrate Christmas even without all their stuff, understanding that [[TrueMeaningOfChristmas Christmas means more than that]]. The Grinch [[HeelFaceTurn realizes the wrongness of his actions]] and, with Max, saves the sleigh from falling, returning everything back to the Whos to celebrate Christmas with them.
* MemeticMutation:
** The famous TheVillainSucksSong is commonly rewritten to be about a hated character or real life person (usually a politician).
** The Grinch's grin as he gets the "wonderful awful idea" of stealing Christmas.
* MisaimedFandom: It's become sort of a meme among social media users to criticize [[TheVillainSucksSong the famous song]] for being unbelievably harsh on the titular character, even though it's implied that the Grinch is a CardCarryingVillain who probably ''enjoys'' all the insults the song throws at him.[[note]]In fact, [[WhatCouldHaveBeen the original idea]] was for Creator/BorisKarloff to narrate, voice the Grinch, ''and'' sing the song, suggesting that the song is meant to represent the character [[EvilGloating bragging about how nasty he is]].[[/note]]
* NightmareFuel:
** The Grinch in general has a penchant for making various {{Nightmare Face}}s, most famously the SlasherSmile that just ''keeps going and going and going'' when he gets his "wonderful awful idea."
** There's also the slow, sinister grin he makes at the sleeping kids before he steals their candy canes. Totally not [[UnusualEuphemism a euphemism]] for anything. [[SuspiciouslySpecificDenial *cough*]] (it was even edited out of broadcasts for a time).
** The Grinch's unsettling [[Film/{{Nosferatu}} Count Orlok]]-esque wall shadow which all but consumes Cindy Lou Who as he's lying to her.
* OlderThanTheyThink: With Creator/ChuckJones directing, this seems like a first-ever pairing of a visionary mind most known for ''WesternAnimation/LooneyTunes'' and the works of Dr. Seuss. However, the first AnimatedAdaptation of one of Seuss's books was actually a ''Merrie Melodies'' short of ''WesternAnimation/HortonHatchesTheEgg''. That short leans more heavily on the ''Looney Tunes'' side than the Seuss side of tone, somewhat in contrast to the Grinch special.
* RonTheDeathEater: [[https://www.youtube.com/watch?v=BGpCr5pi3nE Maddox]] is thoroughly convinced the Whos are the worst neighbors in the multiverse and that the Grinch should be a sympathetic character for putting up with it for 53 years straight. Seuss himself actually said he sympathized a lot with the Grinch, having to deal with an increasingly merchandise-heavy Christmas season from his hilltop home in La Jolla. [[WebVideo/GameTheory MatPat]] also sympathizes with the Grinch; between the Grinch's hatred for the noise the Whos make during the season, how weird-looking the instruments the Whos play are, and the fact Whoville is situated in a caldera land formation, which is prone to making echos, [=MatPat=] [[DiagnosedByTheAudience diagnosed the Grinch with misophonia, a condition that makes repetitive noises unbearable, which MatPat's wife Stephanie also suffers from]]... In other words, the Whos were [[MindRape Mind Raping]] the Grinch every Christmas, making it no wonder the Grinch hates the season. (The silver lining is that misophonia was designed almost half a century after the book was released, so at least the Whos have the excuse of [[UnwittingInstigatorOfDoom not knowing what they were doing]], but there still is the argument of being horrible neighbors towards the Grinch.)
* SignatureScene: The Grinch making his SlasherSmile when he has a "wonderful awful idea".
* ToughActToFollow: The film set a high bar for all future ''Grinch'' adaptations.

!! Stage Musical
* CrossesTheLineTwice: The Grinch infiltrates the Whoville shopping mall to get the supplies that he needs for his schemes. When nearly busted, he lies that he's from "Who-ston" and awkwardly tries to smile.
* RetroactiveRecognition:
** Patrick Page of ''Theatre/{{Hadestown}}'' fame recorded and starred in the first Broadway staging of this show. He uses what would become his Hades voice for the Grinch, fittingly enough.
** The original Old Globe production featured a nine-year-old Creator/VanessaHudgens as Cindy Lou Who.
* ToughActToFollow: Patrick Page has a deep bass voice and a menacing presence when he gets into character even when listening to the 2006 official Broadway recording. Creator/MatthewMorrison in contrast is a tenor, and thus had to adjust his voice for the NBC televised version.

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