wise guy noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of wise guy noun from the Oxford Advanced American Dictionary

wise guy

noun

1(informal) (disapproving) a person who speaks or behaves as if they know more than other people synonym know-it-all OK, wise guy, what do we do now?

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2(slang) a member of the Mafia

See wise guy in the Oxford Advanced Learner's Dictionary

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