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English definition of “dud”

dud

noun [C]     /dʌd/ informal
something that has no value or that does not work : Are there any more batteries ? This one's a dud. He's made eleven movies in the last 20 years and not one a dud.FailuresAccidents and disastersHigher and lower points of achievement
(Definition of dud noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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