the strange obsession with a boy, normally with the last name neville.
"have you got neville fever?"
"errr, definitely!"
by filled234 March 4, 2009
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Noun
A step on a staircase that is unlike the other steps. It is usually spaced closer together or farther apart than the other steps or has some other kind of deformity. Any or all of the above cause people to trip over it on a regular basis even though they climb that set of stairs frequently.

Derived from the character Neville Longbottom's habit in the Harry Potter series to forget to skip a vanishing step and subsequently get stuck in the staircase.
*step, step, step, trip, fall*
"Dang it! That's the third time today I've tripped over the Neville step!"

by Cait S. May 28, 2008
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When a relatively lame person/character does something unequivocally epic and becomes a total hero.

Like when Neville Longbottom kills Nagini in the Deathly Hallows.
Matsuda had a total Neville moment in the last Death Note book.
by shifting November 24, 2010
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When a character, despite being intelligent, brave, talented, or an otherwise stalwart and loyal friend is dismissed by fans until they become more attractive, at which point everyone pays attention to how hot they became.

refers to Neville Lognbottom, a character from JK Rowling's Harry Potter series, who was generally unpopular until the actor portraying him (Matthew Lewis) became attractive in time for the film adaptations of the final book.
Jeff has many interests that nobody cared about before he Neville Longbottomed, they still don't care but at least he's attractive.

Mary Neville Longbottomed and now she can't tell who is her friend and who just wants to sleep with her.
by those guys you don't know September 16, 2013
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A Badass scientist who fights vampires with his cute dog. He found a cure to a virus that killed almost every human. He also commited suicide in a very badass way with a grenade while being cornered by vampires.
That dude looks cool, he reminds me of Robert Neville
by Chops2006 February 10, 2021
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when an ugly person (usually a character with a recurring role in a series) passes puberty and becomes really good looking
have you seen Joseph Gordon-Levitt lately?
he totally neville longbottomed
by harrypotterland July 24, 2013
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In the popular film franchise Harry Potter , Neville longbottom goes from being a slightly geeky , chubby child to a fit as fuck adult. Similar to a glo up, if someone has Neville longbottomed they have gotten significantly hotter
"Have you seen Tom recently? He's so hot now!"
"I know, he's seriously Neville Longbottomed!"
by Ginjasaaa May 30, 2017
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