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English definition of “goof”

goof

verb [I or T] uk   /ɡuːf/ mainly US informal us  
to make a silly mistake: If Tom hadn't goofed and missed that shot, we'd have won the game. She goofed her lines (= said the words in the play wrong).Making mistakes
Phrasal verbs

goof

noun [C] uk   /ɡuːf/ us  

goof noun [C] (MISTAKE)

mainly US informal a silly mistake: I made a real goof by forgetting his name.Faults and mistakes

goof noun [C] (PERSON)

US informal a silly or stupid personStupid and silly people
(Definition of goof from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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