Noun
wiseass (plural wiseasses)
One who makes wisecracks, particularly in a sassy or cocky fashion.
Being a wiseass in a groupthink environment is like throwing an egg at a bulldozer. Matt Taibbi
Thomas was an annoying wiseass who tended to make everyone he met want to kill him, and when I have that much in common with someone, I can't help but like him a little. Jim Butcher
She gave me a hard look. "No one likes a wiseass, Harry." "Are you kidding? As long as the wiseass is talking to someone, people love 'em. Jim Butcher