smirk

Etymology

From Middle English smirken, from Old English smearcian (“to smile”), corresponding to smerian + -cian (English -k), the former element from Proto-Germanic *smarōną (“to mock, scoff at”), and the latter from Proto-Germanic *-kōną. Compare Middle High German smielen/smieren (“to smile”) ( > obsolete, rare German schmieren).

noun

1. An uneven, often crooked smile that is insolent, self-satisfied, conceited or scornful.
2. A forced or affected smile.
   We sat at a long table with a huge salmon on a platter in the center, prepared Szechuan style. Dad sat at one end of the table, and regaled all present with his stories. In the middle of one convoluted yarn, he rose and went around to the salmon in the center of the table. Using his fingers, he dug an eyeball out of the fish, popped it in his mouth and swallowed it whole as we looked on, aghast. “A real delicacy,” he said, with a boyish smirk. 2003, Brian Herbert, “Xanadu”, in Dreamer of Dune, New York: Tom Doherty Associates, →LCCN, →OCLC, page 259

verb

1. To smile in a way that is affected, smug, insolent or contemptuous.

adj

1. (obsolete) smart; spruce; affected; simpering