Goof Definition

go͝of
goofed, goofing, goofs
noun
goofs
A stupid, silly, or credulous person.
Webster's New World
A mistake; blunder.
Webster's New World

(US) A foolish and/or silly person; a goofball.

Your little brother is a total goof.
Wiktionary
(prison jargon) A child molester.
Wiktionary
verb
goofed, goofing, goofs
To make a mistake; blunder, fail, etc.
Webster's New World
To waste time, shirk one's duties, etc.
Webster's New World
To tease or make fun of someone.
Goofed on her younger brother.
American Heritage
To spoil, as through clumsiness; bungle. Usually used with up:
Goof up a job.
American Heritage

(US) To engage in mischief.

We were just goofing by painting the neighbors cat green.
Wiktionary
idiom
goof up
  • to make a mess of, as by ineptness; bungle
Webster's New World

Idioms, Phrasal Verbs Related to Goof

Origin of Goof

  • Possibly alteration of dialectal goff fool from obsolete French goffe stupid

    From American Heritage Dictionary of the English Language, 5th Edition

  • Perhaps from dialectal English goff (“foolish clown”), from early modern English goffen.

    From Wiktionary

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