an obnoxiously conceited person.
a wise guy.
noun (pl) smart alecks
(informal) an irritatingly oversmart person
An impudent or obnoxiously self-assertive individual, a wise guy, as in New teachers often have a hard time coping with the smart alecks in their classes. This expression, dating from the mid-1800s, probably alluded to a person of this description who was named Alec or Alexander, but his identity has been lost.
- Smart appliance
noun See Internet appliance
noun 1. (derogatory, slang) a clever person, esp one who parades his knowledge offensively (as modifier): smartarse guidebooks
- Smart as a whip
Very intelligent or clever, as in Little Brian is smart as a whip; he’s only three and already learning to read. This simile alludes to the sharp crack of a whip. [ Mid-1900s ]
adjective 1. Also, smart-assed, smartassed. characteristic of a smart ass or wise guy. noun 2. smart ass. noun, Slang: Sometimes Vulgar. 1. a wise guy; know-it-all. smart aleck