smirk 
(smûrk)
(smûrk)intr.v. smirked, smirk·ing, smirks
To smile in an annoying self-satisfied manner.
n.
An annoying self-satisfied smile.
[Middle English smirken, from Old English smercian, to smile; see smei- in the Appendix of Indo-European roots.]
smirker n.
smirking·ly, smirki·ly adv.
smirky adj.
- unaccountable
- unaccountably
- unaccounted-for
- unaccredited
- unaccustomed
- unaccustomedly
- unachievable
- unacknowledged
- una corda
- unacquainted
- unaddressed
- unadjusted
- unadorned
- unadulterated
- unadventurous
- unadvertised
- unadvised
- unadvisedly
- unaffected
- unaffectedly
- unaffiliated
- unaffordability
- unaffordable
- unaffordably
- unafraid