irreproachable

adjective
🔊/ˌɪrɪˈprəʊtʃəbl/
🔊/ˌɪrɪˈprəʊtʃəbl/
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  1. (of a person or their behaviour人或行为) free from fault and impossible to criticize无可指责的;无懈可击的 synonym blameless
    Word Originmid 17th cent.: from French irreprochable, from in- ‘not’ + reprochable (from reprocher ‘to reproach’).