mess sth up phrasal verb, verb - definition in the British English Dictionary & Thesaurus - Cambridge Dictionaries Online (US)

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mess sth up

phrasal verb with mess uk   us   /mes/ verb
to make something dirty or untidy: Who's messed up the bookshelf?
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(Definition of mess sth up phrasal verb, verb from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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