1. To use a program or act as a script kiddy to give you unfair advantages over other people, usualy in online video games.

2. To define that you're the best or cool... in a leet sort of way.
OMG!!1!1!11!! I R TEH 1337 HaXXor!!!1!1! PWN4G3!
by 0wn3d? July 24, 2004
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Common internet spelling of Hacker, mostly on Counter Strike. It origins are unknown, yet it is surprisingly not any faster to write than hacker. A Haxxor is someone who hacks or cheats the game giving them cheap or unfair abilities. Some good players who spend their living playing video games are also called haXXors because they are too damn good.
BoB:OMFG teh haXXor is just got head shots on our whole team!

haXXor:oWnEd joo n00bs!!!
by Jboy222 October 24, 2007
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like "the best", you know...
haxxor is a b.m.f. cs clan in tudor
by !LL February 17, 2004
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1. -adverb- used to describe a (sometimes player) series of kills (at least killtac) that is sooo 1337 its unimaginable

2. -pronoun- describing a player who seems so 1337 that he is frequently occured of haxxoring

3. -verb or adverb- a term coined to describe a pk that wass so 1337 you wish for action replay, sometimes used in sarcasm to describe a n00b who thinks his average kill was in fact 1337 (this is also known as a "delusional n00by")
1. jeezus that xWGPx T0x1C had this 1337 haxxors killtacular

2. omfg it was rofl this Or1g1n4l S1n pwned these nubs who thought they were 1337 but S1n was too 1337 haxxors for them

3. that n00b thought his killtac was 1337 haxxors, but hes an idiot because everyone knows a killtac with a sword is n00b and is in fact a "killjacular".
by pwnasauras rex April 11, 2006
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Dude, I haxxored the MS and found some neat stuff on WWII.
by anon May 2, 2004
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A title given for having so much of an adavntage during a any kind of encounter that it feels like cheating.
On one hand you have hedcliff: master of the divine blade. With a defense so impregnable, its earmed him the distinguished title of "Cheating Haxxor Faggot". SAO ABRIDGED EP: 09
by Micro managment January 16, 2021
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