Scornful smile (5)

I believe the answer is:

smirk

(Other definitions for smirk that I've seen before include "Smug smile" , "Complacent smile" , "Conceited smile" , "Derisive smile" , "Show self-complacent satisfaction" .)

I've seen this clue in the USA Today, the Newsday, the LA Times, The Mirror and the Universal.

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