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English definition of “mess with sth”

mess with sth

mainly US phrasal verb with mess     /mes/ verb
to try to change or repair something, but not carefully and usually without success: He was messing with his bike and then he couldn't fit the parts back together.Correcting and mendingEditing and compilingUseless and futile
(Definition of mess with sth from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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