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English definition of “beat sb up”

beat sb up

informal phrasal verb with beat     /biːt/ verb (beat, beaten or US also beat)
B2 to hurt someone badly by hitting or kicking them repeatedly: He claims he was beaten up by the police.Hitting and beatingPunishing by causing pain
(Definition of beat sb up from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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