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Origin of goof

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

Definition for goof up (2 of 2)

goof-up

or goof·up

[ goof-uhp ]
/ ˈgufˌʌp /

noun Slang.

a person who habitually makes mistakes, spoils things, gets into trouble, etc., especially through carelessness or irresponsibility.
a mistake, blunder, malfunction, or the like.

Origin of goof-up

First recorded in 1940–45; noun use of verb phrase goof up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for goof up

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
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Idioms and Phrases with goof up

goof up

Blunder, make a mistake, spoil. For example, I really goofed up and got all the dates wrong. This expression emerged in the military during World War II, along with the synonymous goof off. Quite often up is omitted, as in Sorry, I goofed. [Slang; c. 1940]

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.