n. & v. sl.
n. 1 a foolish or stupid person. 2 a mistake.
v. 1 tr. bungle, mess up. 2 intr. blunder, make a mistake. 3 intr. (often foll. by off) idle. 4 tr. (as goofed adj.) stupefied with drugs.
[ var. of dial. goff f. F goffe f. It. goffo f. med.L gufus coarse ]