Talkative, self-important nerdy men (usually age 30 and up) who, through an inability to properly decode social cues, mistake others' strained tolerance of their blather for evidence of their own charm.
Stop being such a neckbeard.
by maladiciones August 3, 2010
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people typically in their thirties or more, with nothing to do in their lives.

Can be most notably identified by:
- writing name definitions on Urban Diction
Timmy was smashing away on his keyboard, defining the name Jenna on Urban Dictionary: "A marvelous, exquisite manifestation of perfection within individuality... a Jenna is a reincarnation of God hersel-"

His mom busts into the room: "You've been living with me for thirty fucking years Timmy, are you not going to get a job, you fucking neckbeard?"
by hi im your average teabag December 29, 2020
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V. To obsessively collect and hoard some nerdy pursuit to the point of excess and often at the expense of others. Derived from the noun forms of "neckbeard" (both definitions).
I went to the store to get my kid the new action figures from the latest comic book film, but they were sold out already. I later heard one guy neckbearded them all in one purchase.
by Rurouni KJS May 27, 2011
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A Morbidly Obese Alpha male that lives in his Mummy's basement and hacks on CSGO and is extremely toxic. They are typically rarely spotted in public and can be most likely be seen with:

- 1 Man Purse
- Their Mum
- wearing a brony costume

If you encounter a neckbeard at a furry convention consider yourself lucky, you haven't seen the true wrath of a neckbeard.
Found a neckbeard on CSGO last night, What a fucking Manchild.
by rotten air October 23, 2020
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1) a beard that has been allowed to grow down onto a portion of the neck, hence the phrase 'neckbeard'

2) a creepy/pedophillic excuse of a man with a neckbeard (see above). Is stereo-typically attracted to underage anime/hentai girls, and will fall head first into love at the sight of a single 'uwu'. It is advised that you stay as far away as possible or they might hit you over the head with a katana /j. You can identify one by their love of the phrase "M'lady," and the shitty fedora that seems to be permanently attached to their head. Usually overweight but you never know these days.
"This neckbeard would give me mod until i said uwu,"
"What a fucking creep,"
by queerbastard July 11, 2021
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1. (n) Facial hair that does not exist on the face, but instead on the neck. Almost never well groomed.

2. (n) Derogatory term for slovenly nerdy people who have no sense of hygene or grooming. Often related to hobbies such as card gaming, video gaming, anime, et. al.
If this party is full of f*cking neckbeards, I'm out. I've got better things to do than sit around with a bunch of unwashed nerds.
by parttimehanyou December 19, 2005
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Facial hair that extends underneath your chin and onto your neck.
I didn't shave for 2 weeks, and my neckbeard was itching something fierce!
by trashcanmoses January 3, 2004
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