Someone who is new to something and will forever remain at that skill level.
The term is usually applied in the gaming world.
Characteristics include: terrible grammar, excessive use of numbers in the name, TYPING IN ALL CAPS, and begging.

Unlike the common newb, the noob is the person who manages to turn friendly, long-time players into assholes who'll make fun of anybody new to the system.

You can usually find noobs congregating at the starter zones or in major hubs in World of Warcraft, RuneScape, MapleStory, and virtually any other online game.
Newb:

Kevin7: How can I make money?
Me: You can make money from mining.
Kevin7: Do you know where I can get a pick?
Me: Sure, that shop over in the corner.
Kevin7: Thanks, I'll go try it.

Noobs:

freddy1312435: muny plz
Me: You can make money from mining.
freddy1312435: wat
Me: You want money?
freddy1312435: muny plz

jon199569: hgeal
Me: I can't heal you; I'm dead because you couldn't hold aggro.
jon199569: .............................................................
Me: ...
jon199569: HAEL MICH
by Duckboom October 7, 2010
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someone who does not understand or is not doing the correct operation of objectives, yet implies they are and will comment about how he/she is doing better.
Person:Dude your supose to capture the flag not kill your own team.
noob:shut up muthafucka u just cryn cause i got more killz
Person:ITS CAPTURE THE FLAG
by ABC Metaphor May 18, 2008
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A retarder person who is always blaming his team.
His over estimated ego and immaturity causing discomfort in team.
He is distinguished by lack of arguments, besides calling his teammate noobs.
Teammate died:
- you noob! stop playing this game!
Team is loosing a battle:
- you f** noobs, my team is full of noobs! I'm pro but my team sucks!
Teammate made mistake:
- you moron, why you suck so badly
by ever6 November 15, 2012
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the most annoying person on online forums. usally troll alot or think they are the bomb. a lot of the noobs use l33t speak just to anno the public masses
noob: h3y n00bs if you c4nt d0 th1ngs th4t 4r3 c00l j00 s0uld g3t 0ffl1n3 n0w.
normal person: hey noob shut the hell up no one gives a crap about you
by L33tm4s73r November 25, 2011
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"Noob" is a term frequently used in online gaming, and pertains to immature ignoramuses with no grammatical/vocabulary skills. In technical terms, a noob can be referred to as an ultracrepidarian, inaniloquent, autohagiographer.
Every noob can be described as having one or more of these qualities.
Ultracrepidarian: A person who gives opinions on matters beyond their knowledge.
Inaniloquent: Speaking foolishly or saying stupid things.
Autohagiographer: A person who talks in a conceited manner about their own life and accomplishments.

Calling a noob an "ultracrepidarian, inaniloquent, autohagiographer" can yield interesting and often entertaining results.

An example of a noob being ultracrepidarian:

Noob: oh ya????? well ur ugly and hav no lyf! u jus sit at teh pc all day talking mean 2 ppl! U FAIL!!!11!

An example of a noob being inaniloquous:

Noob: roflololllollol omg ur such a n00b! i own ur FACE!!!!1!1!!~~~11!!

An example of a noob being an autohagiographer:

Noob: omg so im lyk rly rly rich and prtty and every1 lyks me and... etc.
by EchoSempai January 10, 2009
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Noob: A term used to insult people, offically naming them unskilled, worthless, pieces of garbage. Often used in video games such as:
Runescape
Maplestory
Combat Arms
Halo
COD 5
Gears of War 2
Blackshot
A way to find a noob:
A typical noob reaction, "Dude you hack"
A typical noob reaction, "Dude you suck"
A typical noob reaction, "Anything you do I can do better"
A typical noob reaction, "I can OWN you NOOB"
A typical noob reaction, "What the hell? YOU HACK!"
Noob actions:
Spamming
Profanity
Harrassment
Some sort of hacking
Glitching
Tapping
Team Killing
by NoobNubMania July 28, 2009
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One who is offended by this term.
John: "You're a noob."

Noob: "What!? What did you just call me?! I can pwn you boy with my 1337 skillz in Halo, GoW, WoW, CS, SC, MoH, BMW, YMCA, DUI, RDLGQ2UYZRT!! And-and also ..." etc.

John: "I rest my case."
by Blu489 February 22, 2008
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