bona fides
noun /ˌbəʊnə ˈfaɪdiːz/
/ˌbəʊnə ˈfaɪdiːz/
[plural] (from Latin)- evidence that somebody is who they say that they are; evidence that somebody/something is honest
真诚;信誉 - Is there any doubt concerning his bona fides?
有人怀疑他的诚意吗? - to check somebody’s bona fides
检查某人的诚信
词源Latin, literally ‘good faith’. - Is there any doubt concerning his bona fides?