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English definition of “mess (sth) up”

mess (sth) up

verb uk phrasal verb with mess   /mes/ us  
B2 to spoil or damage something, or to do something wrong or badly: I feel I've messed up my chances of becoming a great singer. He says that his divorce has really messed his life up. You've really messed up this time.Failing and doing badlyDamaging and spoilingDestroying and demolishing
(Definition of mess (sth) up phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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