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Someone who looks up the word "dumbass" in a dictionary.
If you don't know what a dumbass is you're really a fucking dumbass.
by Assholes Inc. September 05, 2003
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2
a person/animal/other organism that does actions/things that are unfavorable and seen by others as stupid, it's also an insult to a person who is pea-brained.
bosco:10+10 is not twenty it don't have ten in it!
Damien: bosco u fucking dumbass it doesn't need to have that to be twenty
Ben:seriously bosco, did you skip 1st grade or something?
via giphy
by a wild bandaid May 07, 2017
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Noun

1. Someone who attempts to be a smartass but is too dumb to actually succeed.

2. Someone who holds a stupid, illegitimate or completely baseless opinion with a perplexing amount of self-righteousness.
Guy 1: I think it might be time to have that compound fracture looked at by a doctor dude.
Guy 2: Nah the problem would get compounded Lol
Guy 1: WTF? You are such a dumbass.

Guy 3: Hostel is the best movie that was ever made ever!
Guy 4: Oh my god what a dumbass...
by IQuarent April 13, 2015
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4
Redism (that 70's show)
meaning stupid moron
No Kitty He's kinda dumb. And he's an ass too. In fact he's a ....DUMB-ASS
by fireater March 29, 2005
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A person who is both dumb and an ass at the same time. Contrast with "dumbass," which is a conjugate of the terms, thereby creating a new class of person. However, "dumb ass" confers a meaning by which a person is both embarassing to the human race and of below average intelligence.
John you are not only a dumbass, you are a DUMB ASS.
by ChickenBonz October 11, 2006
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A person is both stupid (e.g. dumb) while also stubbornly refusing to stop being stupid when asked (e.g. ass)
I couldn't teach him how to use the paintball gun because he was running around with it between his legs like a dumbass.
by dumbass September 17, 2003
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A great word that is used by Red Foreman from the 70's show on FOX.
Red Foreman: Kitty that foriegn kid is a dumbass
by Endless Shadow December 20, 2003
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