Origin of goof

1915–20; apparently variant of obsolete goff dolt < Middle French goffe awkward, stupid

Definition for goof off (2 of 2)

goof-off
[ goof-awf, -of ]
/ ˈgufˌɔf, -ˌɒf /

noun Slang.

a person who habitually shirks work or responsibility; idler.

Origin of goof-off

First recorded in 1950–55; noun use of verb phrase goof off

British Dictionary definitions for goof off

goof
/ (ɡuːf) informal /

noun

a foolish error or mistake
a stupid person

verb

to bungle (something); botch
(intr; often foll by about or around) to fool (around); mess (about)
(tr) to dope with drugs
(intr often foll by off) US and Canadian to waste time; idle

Word Origin for goof

C20: probably from (dialect) goff simpleton, from Old French goffe clumsy, from Italian goffo, of obscure origin