Macross Missile Massacre: Chachamaru did this at the end of the first anime adaptation using a pactio power.
Made of Iron: Jack Rakan, one of the names people have given him is "That damn guy you can stab with swords all you like and it won't do a thing, dammit"
Magic A Is Magic A: Negima is pretty consistent about what magic can and cannot do. There are no money trees for instance and Love Potions do exist but are highly illegal for logical reasons.
Magic Contract Romance: Negi notes that there is a trend where Mages are known to marry their Minister/Ministra Magi.
Magical Incantation: Typically in unfamiliar languages, such as Latin, Greek, Sanskrit, and archaic Japanese.
Magically-Binding Contract: Pactio is the most obvious, but least straight, example. A straighter invocation occurs when Fate and Godel each try to make Negi sign one which would have the power of a geas.)
Magic Dance: Most Konoka's healing magic involves dances.
Magic Land: This would be the near-literal translation of Mundus Magicus.
Magic Missile Storm: One of the most basic and common offensive spells is Saggitta Magica (Magical Arrows). They come in a variety of elemental types with different properties, and almost every mage is seen using the spell at one point. Near the end of the manga Negi fires off a volley of 1001 lightning Saggitta at Fate, who notes that while Saggitta Magica is a low-end spell Negi has scaled it up so much that it's essentially the same as an anti-army spell.
Magic Staff: He carries a staff most of the time when doing magic. It serves as a focus for his spells and he also uses it to fly in a manner resembling a Flying Broomstick. It also is a Memento MacGuffin since Nagi was the one who gave it to him.
Anya uses one of these as opposed to Negi's staff. Using a wand to cast instead of a staff or other focus is apparently considered childish. They also don't work as well.
Sceptrum Virtuale looks like a magical girl toy, but it actually gives Chisame hacking abilities.
Magitek: Chao's Deadly Upgrade and Powered Armor, as well as Chachamaru's very existence. Oh, and a magic gun. And then there's the Paru-sama (a Goldfish-Style Aerofish with a high-propulsion-pentagram-18-prayer-spirit engine and anti-pirate military-grade armaments.)
In the Magic World Arc, upon having his right arm severed in a fight, Negi just exclaims "I still have my left!" and continues to fight.
Fate later has his arm lopped off by Tsukuyomi and he doesn't seem too worried about it. Given that he's an Artificial Human, he reattaches it offscreen.
Make It Look Like a Struggle: Amnesiac Yue tells Negi to attack her when they accidentally meet, all the while wondering what exactly is she doing and why.
Malfunction Malady: He creates gusts of wind when he sneezes. Wind that seeks out and strikes girls' clothing like a heat-seeking missile.
Nodoka's skirt gets poofed up thanks to a wind spell, leading her to try really hard to hold it down.
Yue shows Negi her progress in magic training by executing a wind spell that hurls her dress upward, leaving her panties exposed for Chamo to take a good long look at.
Marry Them All: A joke was made halfway through the manga about Nodoka considering a three way relationship with Yue and Negi to be an ideal solution.
Marshmallow Hell: Negi's female students regularly sandwich his head in between their boobs upon tightly hugging him, and the Trope Namer moment occurs when several of his female students Group Hug him simultaneously.
Mars Needs Women: Chamo seems disturbingly attracted to human girls.
Masculine–Feminine Gay Couple: Konoka and Setsuna. Konoka is a very girly and cheery Ojou with healing powers while Setsuna is a serious swordswoman with some Bifauxnen looks who is determined to protect Konoka from anything. This aspect of their relationship is emphasized in some occasions where they dress up and Setsuna ends up wearing male clothing to contrast Konoka's elegant dresses.
Masquerade: Mages are not supposed to reveal themselves to Muggles. Doing so puts them in danger of severe punishment, and Laser-Guided Amnesia for all involved if discovered.
Mass Teleportation: The portal to Mundus Magicus bears a strong resemblance to an airport.
Measuring Day: Negi doesn't seem to understand what it entails and asks the girls to get ready for it by taking off their clothes.
Medium Awareness: The characters comment several times on the images that appear in the back of the panel to illustrate one of their thoughts or a flashback.
Konoka hastily readies the Relax-o-Vision card used some chapters back when Rakan's taunting of the Amazon Brigade that's trapped them edges too close to Hentai for comfort.
During Misora's hilarious attempt to attempt to deny her identity through Blatant Lies, big glowing letters appear above her head proclaiming her name. She frantically tries to wave it away.
Since Negi is so young, most of the girls don't feel embarrassed around him. Anya, though, is willing and capable of sending him flying - but only if he lets her.
Meido: A favorite of Evangeline and Fate, and apparently standard uniform for Magic World slaves.
Mental World: During his Magia Erebea training, a copy of Evangeline yanks Negi's mind into a magic scroll and creates a world for him to train in.
Me's a Crowd: Negi attempts to make a single copy of himself using a traditional Japanese magic that animates a paper doll, with which he is unfamiliar. Eventually he succeeds and goes away, but afterwards the four failed paper copies also come to life.
Mid-Season Upgrade: Chachamaru gains one of these after her Gadgeteer Genius creator Hakase gathered the observed battle-data of the previous arc. Among a few new weapons and a speed upgrade, one major aesthetic improvement has her concealing her mechanical joints with softer, more realistic skin. She still has a set of antenna ears on her head, so it’s not hard to figure out she's a robot.
Mind over Manners: Nodoka's ability is limited to just mind reading, but it's specifically noted that she's probably the one with said artifact simply because she's the one least likely to abuse it.
Misplaced Accent: In the English dub, Negi speaks like an American attempting the I Am Very British Received Pronunciation accent, not in anything like a Welsh accent.
Negi's absent mother gets absolutely no mention until we finally learn that his mother is/was Princess Arika Anarchia Entheophysia. He didn't know either.
Mrs. Cocolova was turned to stone while Anya was away. She dusts her off regularly.
Mobile Shrubbery: Nodoka uses this to quietly approach Natsumi, Makie, and Yue all talking about Negi.
Monster Mash: Negi's associates include a ghost, a vampire, a half-bird demon, and a dog demon. On the other side, the REALLY monstrous-looking bounty hunters are later seen casually relaxing in the same baths as Negi and company.
Negima!'s left-field ending; the gateport incident in Vol. 21.
A more minor one comes when Kurt Godel explains Negi's lineage and then gives Negi a We Can Rule Together offer. An otherwise serious moment is made funny with the inclusion of an RPG-style 'Yes/No' dialogue option.
Also thoroughly Lampshaded by Paru's drawings depicting all the different "Bad ends" that could happen at one point or another. such as Negi turning into an Ermine for allowing Magic to be exposed to the world.
And in Chapter 261, epic arm wrestling between Ku Fei and Negi. In formal attire.
Rakan's technique "Eternal Negi Fever" that he wants to teach Negi.
Rakan's Secret ultimate technique: Silent flipping and stripping. Also his Rakan Gentle breeze tempest fist. Made exclusively to use against female enemies.
Negi uses this almost continuously early on. He constantly infuses himself with magic so he can keep up with the girls as they sprint to school. It's more obvious after he temporarily seals his powers which makes him totally unathletic. He also tried to help Asuna do her paper route faster by giving her a lift on his flying staff, but it didn't quite work out.
Kaede uses her ninja techniques to do things like hunt fish.
Haruna uses her clones to finish her drawings.
Chisame used her Artifact to make herself the #1 Internet Idol. This turns out to have been a bad idea.
Mutually Exclusive Magic: Ki and magic are incompatible for the vast majority of people. For those people that can use them together (only three so far have been shown), it becomes a Yin-Yang Bomb.
My Kung-Fu Is Stronger Than Yours: Not only do the major characters spend almost all their time off-screen either training or sleeping (and have been doing so for years), the training itself is a frequent plot point on-screen — especially if it's Training from Hell.
My Parents Are Dead: When Asuna takes Negi for a bath, this comes up. Negi immediately feels bad for mentioning it but Asuna doesn't make a big fuss out of it. Given how old she is, her parents, if any, are likely a distant memory.
Mysterious Protector: The manga shows Negi thinking of his father this way, even placing himself in danger hoping to get him to appear.
Myth Arc: Negi trying to find his father. The result isn't pretty.
Naked Apron: Setsuna's version of Cosmo Entelecheia involves Konoka dressed like that.
Naked First Impression: Since Chizuru and Natsumi find Kotaro while he's in his dog form, he's naked when he first meets them.
Near Misses: sAnyone using time-warping bullets suddenly becomes an awful shot if they are facing a stronger character. Every time it seems the latter will get hit, they dodge just so.
Negi's father does this to a demon in the flashback to the destruction of his village, and finishes it with a nice squeeze too.
Later, Negi himself pulls it on Tsukuyomi when she foolishly tries to assault the ship with him on board.
Nerf Arm: Setsuna wields a broom during the Tournament Arc to get around a restriction on bladed weapons. Shinmeiryuu techniques do not seem to actually require a weapon, so she could have even gone barehanded.
Never Bring A Knife To A Fistfight: Ku Fei is the only fistfighter among the girls of the group, and faces off against enemies with weapons many times.
Never the Selves Shall Meet: Negi royally screws this up during the Mahora Festival, requiring some quick damage control from Kotaro of all people.
Never Trust a Hair Tonic: A female variation, when short-haired Ako thinks she should grow her hair out to be more attractive. A (not so) helpful denizen of the magic world promptly gives her a magic hair-growth potion, which works perfectly for all of a minute before the hair begins to engulf her.
New Year, Same Class: Negima's class doesn't change at all, despite there being around twenty other classes in the grade. Hand-waved before it happened; it was stated that Mahora doesn't split up its classes.
Newspaper Dating: A short-term version is used in the Mahora Festival Arc to find out that the team's stay at Evangeline's resort lasted for much longer than thought.
Nice Job Breaking It, Herod: The attack on Negi's hometown was done by the Megalomesembrian Senate in a specific attempt to kill Toddler!Negi. It obviously failed, and now Negi knows, and boy is he pissed.
Ninja Pirate Robot Zombie: Would fit right in besides the Welsh ten-year-old kung-fu wizard school teacher who's also technically a prince who is the protagonist. Never mind Chao Lingshen, the time-traveling magitek-wielding Martian mad-scientist restaurant owner who is fittingly the protagionist's decendant and totally wasn't BSingabout that Mars thingeither. And that's just to start.
No-Holds-Barred Beatdown: After Quartum blows Chachamaru apart and impales her upper torso Negi shows up and promptly manhandles him in close combat, eventually cutting him in half as well.
First tournament fight in the Mundus Magicus arc. Negi and Kotaro dodge a really big attack combo... only to appear leaning on the big guy talking about how much that would have hurt.
When Kaede is going up against Sanders in the tournament semifinals, he tries to instantly end the fight by crushing her with gravity magic. She appears right behind him, chatting about how the one being crushed is just a clone.
Non-Fatal Explosions: Going to school wouldn't be very fun if the local robots killed you.
Non-Lethal Warfare: Used during the War on Mahora Academy, both times. Humans are not to be harmed, after all.
There're actually quite a few. One including "Chizuru and a large number of spring onions", and another about Chisame's "First time on the net".
We also have Negi's "troubles" during Christmas and Valentine's Day.
During Ku Fei’s arm wrestling match with Negi, the crowd makes mention of an infamous organization in Mundus Magicus being wiped out, and speculates that she may have had a hand in it.
Chisame: Just what has that Kenpo-nut been getting up to?
When Yue trips over a tree root in the Library Island arc and twists her ankle, she implores Negi to leave her. Negi refuses and tries to carry her, but since he has no magical augmentations, he fails. Kaede picks up Yue and effortlessly carries her out.
At the climax of the aforementioned arc, Negi attempts to stay behind because otherwise the elevator won't move due to the weight limit being exceeded. Asuna overrides his decision and tosses the magic book they were looking for instead.
No Romantic Resolution: We never find out who Negi liked. We know he didn't like Asuna during the sports festival and he didn't end up with Nodoka, Yue or Evangeline while Chisame is apparently a hikikomori and Makie is still fruitlessly pursuing him. Not many plausible options after that. The answer wasn't given until years after the ending through the Stealth Sequel: it was Chisame.
Nosebleed: Given the amount of fanservice and awkward moments, this trope is surprisingly rare. Most of them involve the class representative, and random background characters.
The Nose Knows: Chamo uses a pair of panties to track down a pair of enemy girls who are dozens of kilometers away with pinpoint precision.
No-Sell: Chisame is completely immune to the fake Cosmo Entelechia because it works based on how dissatisfied the target is with their life. Chisame is right where she wants to be. When she learns this, she's predictably insulted, which in turn makes Makie insulted, who was also immune.
No Smoking: Chamo's cigarettes were winkingly labelled "chocolate" in the first anime.
Not a Date: Setsuna denies that her outing with Konoka is a date, despite everyone, including Konoka, treating it like one.
Not Just a Tournament: There's a tournament whose hidden purpose is to gather evidence of the existence of magic and flood the media with it.
Not Quite Flight: Kotaro can't fly, but his shadow hounds can, and being made of darkness, he just forms them into the shape of floating wheels attached to his feet so he can run through the sky.
Not the Fall That Kills You…: When Negi's group warps back an entire week they emerge a few thousand feet in the air, but their fall is cushioned by Negi's wind magic.
Not What It Looks Like: After Asuna wakes up from a dream where she remembered her time with Ala Rubra, she stumbled across Setsuna and Konoka in the middle of making a pactio. Given that the UST had begun to escalate at this point, all Asuna sees is her roommate about to kiss her friend and bodyguard. Note that while Setsuna totally panics when Asuna comes, Konoka isn't the least bit flustered.
Numerological Motif: Each member of the class their seat number takes great importance they are referred to by number at the start of the series and are on their Pactio Cards.
Negi's Pactio card number is 496 The Perfect Number of his 31 students. (As in he wouldn't be who he is without each of his students)
Luna's Pactio card number is 32 as in the newest student to the class
Obfuscating Stupidity: Kotaro can hold a perfectly coherent and fairly intelligent conversation with Negi and Fate about the space program.
Evangeline herself is a blue-eyed vampire who is Really 700 Years Old. It was recently discovered that she herself is also a creation of the Lifemaker; an experiment on the concept of indestructibility.
Ocular Gushers: An anime staple, though when the characters are seriously crying, it's not exaggerated.
When a very large ball-and-chain comes flying towards her and Konoka, Setsuna slices it in half and doesn't even notice it... because she's beating herself up for getting weaker.
Evangeline to some random guy in the tournament while contemplating new information about Negi's father. The poor guy never saw it coming.
Official Couple: Nagi and Arika, as well as Kotaro and Natsumi. Whether the epilogue officializes Konoka and Setsuna is a hot topic of debate among the fandom.
There was apparently supposed to be a story during Christmas following the Magical World arc, where Fuuka and Fumika would meet two animals who turned out to be magic princes in disguise that the two would eventually marry. Also, Fuuka and Fumika would have made their Pactios with Negi during this time. The events did happen and are still mentioned, but were never actually shown.
Saving Nagi from the Lifemaker. Nagi appears alive and well in the final chapter, and it is mentioned that he was saved from the Lifemaker through the effort of Negi and his 31 students, and healed by Konoka's magic. However, like with the Christmas story about Fuuka and Fumika, it is mentioned but never shown.
Oh, Crap!: Jack making shit puns before confronting Fate's minions during Godel's ball. He says he has to go take a dump, and then tells Fate that everyone has to wipe their own asses. Truly, the shithas hit thefan.
Old School Building: In the first anime this is the setting for the "kiss catch" game.
One Cast Member per Cover: The manga's New Edition has a total of 19 volumes with a girl from Class 3-A on each cover. Only the first volume has both Negi and Asuna.
One Dialogue, Two Conversations: When Negi asks Asuna to accompany him on a trip to search for traces of his father as his magic partner, Asuna misinterprets it as a love confession, as do Yue and Nodoka, who overhear it. Haruna doesn't, but she does enjoy the ensuing hilarity.
One-Gender School: Mahora seems to separate the genders, but apart from 3-A it's never elaborated on.
One-Hit Kill: Time-displacement bullets. (Interesting in that it's not a "kill" in the traditional sense, but tactically there's little difference.) Also, Code of the Lifemaker has this effect on natives of the Magical World.
One-Sided Arm-Wrestling: Negi vs Ku Fei. At first it seems like Ku Fei's brute strength will win but then Negi takes it seriously and completely beats her.
Subverted later on; after Negi single-handedly wipes out a gang of bounty hunters, the leader starts muttering about revealing his true form. Negi gives him a mean look, and he goes back to cowering on the ground.
The Only One Allowed to Defeat You: In chapter 314, Fate is revealed to have survived, and is fighting Quintum to protect Negi's comrades. Because only he is allowed to defeat his rival.
Only Six Faces: Ken's art style is essentially this. A lot of character from both genders have the same face.
Only Smart People May Pass: The end of the Baka Ranger arc has the titular five girls answering test questions to facilitate their escape.
On the Money: Buying out slaves = one martial arts tournament. Actually an inversion: It makes perfect sense for a martial arts tournament to have around one million Drachma as a reward, but not so much for that to be the exact price of the slaves' debt.
Orwellian Retcon: How old is Negi, chronologically? Well, the initial magazine releases said he was born in the summer of 1993, making him about 9 years old in the prologue. The bound volumes changed this to simply "1994", consistent with his earlier admission that he's only 10 if you use kazoe, and Word of God reportedly has him at about eight and a half at the start of the series.
Our Demons Are Different: There are a number of different demon types, including half-breeds within class 3-A.
Our Time Travel Is Different: Instantaneous. It doesn't take too long for Negi to travel back in time, whether it be a day or a week.
Outdoor Bath Peeping: Chamo tries to bring Negi along to do so but Negi is too much of a gentleman.
Out-of-Clothes Experience: When Asuna sees Negi's past through the dream spell, which works via a naked astral projection inside someone's mind. That's apparently just how that kind of magic works.
Evangeline: Hurry and whip it out, boy! Negi: But Evangeline-san, we already did it, it's too much! Evangeline: I told you, call me master.
By the way, the payment was sucking blood from his arm.
Later on, Chachamaru nearly causes Chisame's head to explode with this poorly worded statement about Negi's martial arts training.:
Chachamaru: I have been serving as Negi's partner every night and he seems to be happy about it.
Overly-Long Tongue: A Negi golem created by Haruna has a 23.5 cm tongue. She first states that "it" is 23.5 cm long, causing some of the girls to think of... something else before she clarifies she meant his tongue.
Overnight Age-Up: Forward and reversed with the Age-disguising pills.
Override Command: The emergency shutdown button for Chachamaru is on her chest.
of his 31 students. (As in he wouldn't be who he is without each of his students)