unexceptionable
adjective formal uk/ˌʌn.ɪkˈsep.ʃən.ə.bəl/ us/ˌʌn.ɪkˈsep.ʃən.ə.bəl/
不错的;无懈可击的，无可指责的
not bad; having nothing that anyone could criticize or disapprove of
an unexceptionable speech 一场无懈可击的演讲
Synonym: unimpeachable
Opposites: exceptionable objectionable