impugn
Word family adjectiveimpugnablenounimpugnationimpugnerimpugnmentverbimpugn
im·pugn /ɪmˈpjuːn/ verb [transitiveT] formal CRITICIZEto express doubts about someone’s honesty, courage, ability etc 对〔某人的诚实、勇气、能力等〕表示怀疑 I did not mean to impugn her professional abilities. 我并不是怀疑她的专业能力。
Origin impugn (1300-1400) Latin impugnare, from pugnare “to fight”