A guy with a beard on his neck because he doesnt shave because hes inside allday errday becasue he plays games such as world of war craft.
"You know whose a neckbeard"
"Who"
"that guy Rishi, he hasn't left his house since sophomore year"
"sheeet isn't he a senior"
"yeah"
"word"
by neckbeard spotter November 09, 2013

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Anyone who makes long definitions to pointless words that nobody uses. AKA You.
"Why did this guy write a 20 Paragraph paper on the definition of Ratchet?"
"Because he's most likely some loser Neckbeard."
by Man Of Noob March 18, 2015

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1) Facial hair that only grows undeneath the chin.

2) A synonym for a double chin , a neck that looks like a beard of flesh.
1) person 1: damn, that geek brother of mine has a horrible neckbeard. he can't even grow a real one.

2) person 2: yeah, he ate too much and grew a flesh neckbeard

person 1: he's guilty on both counts
by yardragon February 05, 2013

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1. A long beard that reaches to the owner’s chest; a beard that essentially hides the neck.
2. The wearer of a long beard.

A term used to describe the long facial hair of some eccentric engineers and computer scientists -- especially on university campuses in the 70s -- who are so buried in their scientific work that they simply neglect to shave for months or even years.
1. Dexter looks like a hermit with his neck beard.
2. Look at Wayne, he’s hanging out with the neck beards now.
by hybrid noisebloom April 20, 2010

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When a man grows a full beard, but still shaves his neck. A fat man will often do this in an effort to make his face "slimmer".
Maybe he is trying to start a new trend called the neckbeard?
by heffe1981 March 24, 2016

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When facial hair grows on a manchild's neck but not on his face. Identifying said person as someone incapable of adult interaction or successful working relationships.
Meet my co-worker neckbeard. Don't stare, he gets self conscious about his inability to grow a mans beard.
by MAJEKA August 01, 2011

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Someone who does absolutely nothing with their life, has no job, no future, and always tries to find a way out of having to get a job. Because only men can have a full neck beard (there are of course exceptions) they are usually the ones referred to as a neck beard.
Man my friend is such a neck beard that he took out yet another loan to pay for his tattoos as well as another speeding ticket he got last week
by ray ray va jay jay January 17, 2011

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