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English definition of “challenging”

challenging

adjective uk   /ˈtʃæl.ɪn.dʒɪŋ/ us  
B1 difficult, in a way that tests your ability or determination: This has been a challenging time for us all.Difficult to understandComplicated and difficult to doPuzzle and confuseComplicated and difficult to doDifficult to understand
(Definition of challenging from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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