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mess with sb

informal phrasal verb with mess
 
 
/mes/ verb

Definition

to treat someone in a bad, rude, or annoying way, or to start an argument with them: I've warned you already, don't mess with me!Treating people or animals badlyInsults and abuseUnkind, cruel and unfeelingViolent or aggressive
(Definition of mess with sb from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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