Smirk

A smirk is a smile evoking insolence, scorn, or offensive smugness, falling into the category of what Desmond Morris described as Deformed-compliment Signals. A smirk may also be an affected, ingratiating smile, as in Mr Bennet's description of Mr Wickham as making smirking love to all his new in-laws in the novel Pride and Prejudice.