wise guy
noun/ˈwaɪz ɡaɪ/
/ˈwaɪz ɡaɪ/
- (especially North American English, informal, disapproving) a person who speaks or behaves as if they know more than other people synonym know-all
- OK, wise guy, what do we do now?
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- (US English, slang) a member of the Mafia
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wise guy