单词：impugns
音标：[ɪmˈpju:nz] ；
v. 非难, 指谪( impugn的第三人称单数 ); 对…有怀疑
v attack as false or wrong
impugn的用法和样例：
例句
用作动词(v.)
- It is they who give the rest of us a smudge on our reputations and impugn our character.那些人给我们其他人抹了黑，破坏了我们的名声。
- Nobody can impugn his ability.没有人对他的能力表示怀疑。
经典引文
To speak of quackery is not automatically to impugn the motives of unqualified practitioners.
出自：R. Porter