A smirk is specific kind of smile, one that suggests self-satisfaction, smugness, or even pleasure at someone else's unhappiness or misfortune.

Smirk can function as either a noun or a verb: "Wipe that smirk off your face. Don't smirk at me, buddy: you're gonna get yours next!" A smirk implies you think you're better than the person you're smirking at. Ever heard of the term "service with a smile"? Yeah, well, there's a reason it's not "service with a smirk."

Definitions of smirk

v smile affectedly or derisively

to smirk contemptuously
Type of:
change one's facial expression by spreading the lips, often to signal pleasure

n a smile expressing smugness or scorn instead of pleasure

Type of:
grin, grinning, smile, smiling
a facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement

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