goof

• POS: Noun, Verb (usu participle), Verb (intransitive), Verb (transitive)

CIDE DICTIONARY

goof, n. 

 a stupid fool.  [WordNet 1.5]

goof, v. i. 

 to commit a faux pas or fault.  [WordNet 1.5]

OXFORD DICTIONARY

goof, 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.

Etymology

var. of dial. goff f. F goffe f. It. goffo f. med.L gufus coarse

THESAURUS

goof

asshole, bitch, bitch up, bloomer, blooper, blow, blunder, bobble, bonehead into it, bonehead play, boner, boo-boo, boob, boob stunt, booby, boot, bugger, bugger up, bungle, butterfingers, chump, clumsy, ding-a-ling, dingbat, dingdong, dolt, dolthead, drop a brick, drop the ball, dub, duff, duffer, dumb trick, err, fathead, flub, fluff, fool mistake, foozle, foozler, foul up, foul-up, fumble-fist, galoot, goof up, goofball, goofer, goon, gum up, hash up, hick, howler, jerk, jerk-off, klutz, louse up, louse-up, lummox, lump, lunkhead, mess up, miss, miss the mark, muck up, muck-up, muff, muffer, mutt, oaf, pratfall, prize sap, pull a boner, rube, sap, saphead, sawney, schlemiel, screamer, screw up, screw-up, slip, slip up, slob, stumblebum, stumblebunny