- smartarse (smartass)
- n, adj(a person who is a) know-all, smug or insolent. The word describes someone whose display of real or supposed clev-erness renders them obnoxious. 'Smart alec' or 'wise-guy' are politer synonyms.► 'If she felt like giving them a smartass an-swer, why didn't she? Because she couldn't think of a smartass answer fast enough.' (The Switch, Elmore Leonard, 1978)
Contemporary slang . 2014.