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English definition of “fuck (sth) up”

fuck (sth) up

phrasal verb with fuck     /fʌk/ verb [I or T] offensive
to damage, harm, or upset someone or something, or to do something very badly: Her parents' divorce really fucked her up. I fucked up the interview. The exam was a disaster - I really fucked up.
(Definition of fuck (sth) up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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