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English definition of “challenge”

challenge

noun [C or U] (QUESTION)    /ˈtʃæl.ɪndʒ/
C2 asking if something is true or legal: The result of the vote poses a serious challenge to the government's credibility. Because of the way this research was conducted, its findings are open to challenge.Suspecting and questioningQuestioning people and asking questions in generalCuriosity
(Definition of challenge noun (QUESTION) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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