impugn

音标发音

Nobody can impugn his ability.
沒有人對他的能力表示懷疑。
dict.cn
The president and his allies regularly impugn Mr Rafsanjani’s integrity and that of his children, one of whom happens to run the Tehran metro.
內賈德和他的同黨經常攻擊拉夫桑賈尼和他孩子們的正直，其子之一恰巧經營著德黑蘭的地鉄。
Overly proud people refuse to admit their mistakes — and sometimes even deny the fact that they make them — because they feel that it would impugn their image.
過於自負的人拒絕承認自己的錯誤 — 甚至有時候否認自己制造錯誤的事實 — 因爲他們感覺那將會打擊到自己的形象。

To tolerate Socrates would be to say to him that we care little for our way of life and that we are willing to let you challenge it and impugn it every day.
若是容忍囌格拉底,就像在對他說,我們不是很在意我們的生活方式,我們願意讓你提出挑戰竝日日進行抨擊。
耶魯公開課 - 政治哲學導論課程節選

No thrice-divorced former Oxycontin addict is in a terrific position to impugn anyone's mental balance.
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And no one on this committee at any time should impugn his character or his integrity.
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Not to impugn Pimco's integrity (which I consider the highest), but this view is convenient for that firm.
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to cause people to doubt someone's character, qualities, or reputation by criticizing them

If you impugn something such as someone's motives or integrity, you imply that they are not entirely honest or honourable.