Reminiscent of the hunched over cave man, with his arms to the ground. An insult used against those of extremely low intelligence, or general stupidity.

Also see low brow
Bubba is such a knuckle dragger.
by Matt September 29, 2004
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An individual, usually male, who lacks intelligence and/or culture.
The knuckle-dragger could not even name when the War of 1812 was.
by Tristan Reef October 23, 2007
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A strong or stupid person. Like someone on steroids or a caveman that can only grunt to communicate.
Call off your knuckle-draggers. Justin will pay you whatever you want.

Justin is a knuckle dragger. He believes everything on the internet is fact.
by Lagz November 6, 2013
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Civilian, U.S. Military & MC slang referring to the groups of Infantry, SOCOM personnel and/or Paramilitary Components of the U.S Intelligence community that can be seen riding motorcycles in all weather, hanging out together drinking together and or looking shady.
Guy 1- “Those guys look especially hard-assed and rough outta all the bikers here”
Guy 2- “We’ll yeah….they are a bunch of Knuckle Draggerz!”
by 03bangbang January 27, 2022
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Military slang referring to infantry or Special Forces personnel, or paramilitary components of the US Intelligence Community.

The term stems from the common belief among the rear echelon and support personnel that Infantry soldiers are of generally lesser intelligence than support personnel.
The Liberty chow hall was full of knuckle draggers today, they smelled like B.O. and gun powder.

I had to catch a ride to the Green Zone with a platoon of knuckle draggers, and they made fun of my M16 A2 the entire time.
by cdangerd December 11, 2009
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"So many violent acts have been committed by these Knuckle Draggers in 2019. They're out of control".
by IBTAL December 28, 2019
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A term used for a human who is evidence of devolution - humans evolving back into apes and other primates.

This man often dribbles in public places; cannot drink a hot beverage without spilling it on himself, the floor or someone else; may walk into objects like lampposts and bushes; may ask questions repeatedly such as "how are you doing?", or "hows your computer software going?" and has an interwoven, messy beard that houses flees, mites, pieces of pork and dribble.

It's safe to say that the knuckle draggers of this world are a frightening breed, who you should avoid if at all possible.
Knuckle dragger: Hows the course going mate?
Average person 1: Ummm.... yeh fine I guess?!
Knuckle dragger: Oh yeh cool dude. You going paintballing this afternoon?
Average person 2: No I'm not.
Knuckle dragger: *Dribbles*
by KnuckledraggingGuy March 17, 2008
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