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English definition of “duplicate”

duplicate

adjective [before noun]     /ˈdjuː.plɪ.kət/ US  /ˈduː-/
being an exact copy of something: The thieves were equipped with duplicate keys to the safe .Copying and copiesForgery
(Definition of duplicate adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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