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English definition of “duff sb up”

duff sb up

UK informal
verb [T] uk phrasal verb with duff   /dʌf/ Australian English informal us  
to hit someone repeatedly: Two of the robbers threatened to duff the witness up if he went to the police.Hitting and beatingPunishing by causing pain
(Definition of duff sb up from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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