WordReference Random House Unabridged Dictionary of American English © 2026
smart′ ass′, Slang (sometimes vulgar).
smart-ass (smärt′as′),USA pronunciation Slang (sometimes vulgar).
adj.
n.
- Slang Termsa wise guy;
know-it-all.
- 1905–10
smart-ass (smärt′as′),USA pronunciation Slang (sometimes vulgar).
adj.
- Slang TermsAlso, smart′-assed′, smart′assed′. characteristic of a smart ass or wise guy.
n.
- Slang TermsSee smart ass.
- 1955–60
'smart ass' also found in these entries (note: many are not synonyms or translations):