The Collaborative International Dictionary
Smirk \Smirk\, v. i. [imp. & p. p. Smirked; p. pr. & vb. n. Smirking.] [OE. smirken, ASS. smercian, smearcian; cf. MHG. smieren, smielen, to smile. See Smile, v. i.] To smile in an affected or conceited manner; to smile with affected complaisance; to simper.
vb. (en-past of: smirk)