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English definition of “dud”

dud

noun [C] uk   /dʌd/ informal us  
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.

dud

adjective uk   /dʌd/ informal us  
not working or not having any value: A customer had tried to pay with a dud cheque (= one for which a bank will not give money).
(Definition of dud from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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