im·pugn /ɪmˈpjuːn/ vt. 指责，非难；抨击；对(言词、行动、品质等)表示怀疑；反驳 impugn the present system of education 抨击现行的教育制度 His personal integrity, ability and intelligence are impugned by none. 对他个人的正直、能力和智力无人表示怀疑。 [< OFr impugner < L impugnāre to fight against, attack < IM- ＋ pugnāre to fight]