a person who likes to show off in a clever but annoying wayif you weren't such a wise guy all the time, people might be more interested in hearing what you have to say
if you weren't such a wise guy all the time, people might be more interested in hearing what you have to say
smart alecks(also smart alecs), smarties, smarty-pants, wiseacres, wiseasses, wisenheimers(also weisenheimers)
know-alls(chiefly British), know-it-allswisecrackershotshots, show-offs
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