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English definition of “challenge”

challenge

verb [T]     /ˈtʃælɪndʒ/
DISAGREE B2 to express disagreement with ideas, rules, or someone's authority: The election results are being challenged.Arguing and disagreeing
INVITE to invite someone to compete in a game or fight: He challenged Smith to a fight.Competing and contending (non-sporting)Competing in sport
(Definition of challenge verb from the Cambridge Learner's Dictionary © Cambridge University Press)

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