To smile in an affected, often offensively self-satisfied manner.(verb-intransitive)
An affected, often offensively self-satisfied smile.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "smirk" in a sentence
"BTW Sam ... a 'smirk' is certainly in the eye of the beholder ... you obviously have a jaundiced eye!"
"I just can never, ever take this Dreamworks stuff seriously as long as that smirk is front and center, in my face."
"His congenital smirk is best described as the sort of grin that, if named, would guarantee this comment a term in Moderator Purgatory."