Definition from Wiktionary, the free dictionary
- IPA: /ˈdʌm.æs/
dumbass (plural dumbasses)
- (US, vulgar, slang) A person marked by stupidity or foolishness.
- She told him he was a dumbass.
- The dumbass walked off with my car keys and left me his.
- See also Wikisaurus:fool
person marked by stupidity or foolishness