smirk (smûrk) intr.v.
smirked, smirk·ing, smirks To smile in an affected, often offensively self-satisfied manner. n. An affected, often offensively self-satisfied smile.
[Middle English smirken, from Old English smercian, to smile; see smei- in Indo-European roots.] smirk'er n., smirk'ing·ly, smirk'i·ly adv., smirk'y adj.
O.E. smearcian "to smile." No exact cognates in other languages, but perhaps related to smerian "to laugh at" (see smile (v.)). The noun is first recorded c.1560.