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Definition of dumbass

dumbass

/ˈdʌmˌæs/
dumb · ass
Plural:dumbasses
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dumbass Lexical Profile

dumbass Game Scores & Validity

• noun

1

North American A thoroughly stupid, foolish, or obnoxious person (vulgar slang).

Example

"Some dumbass parked right across the driveway and blocked everyone in."

Synonyms
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Antonyms
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• adjective

1

North American Utterly stupid, foolish, or poorly thought out (vulgar slang, used before a noun).

Example

"Leaving the keys locked inside the running car was a dumbass mistake."

Synonyms
View all synonyms for dumbass
Antonyms
View all antonyms for dumbass

Word Nuance & Usage

Because 'dumbass' is considered mildly vulgar slang, it is inappropriate for formal, academic, or professional contexts. As an adjective, it is almost exclusively used attributively before a noun (e.g., 'a dumbass mistake') rather than after a linking verb.

• Nearby Words

duly
dumas
dumb
dumbass
dumbbell
dumbfound
dumbfoundedness

Cite this Entry

Wordmom. (2026). Definition of Dumbass. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/dumbass
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