irreproachable
adjective /ˌɪrɪˈprəʊtʃəbl/
/ˌɪrɪˈprəʊtʃəbl/
- (of a person or their behaviour) free from fault and impossible to criticize synonym blamelessWord Originmid 17th cent.: from French irreprochable, from in- ‘not’ + reprochable (from reprocher ‘to reproach’).