1. 责难，指摘，指责，非难，质问
2. 抨击，打击，攻击
3. 对…表示怀疑，置疑
4. 驳斥

1. attack as false or wrong

1.指责,非难,质疑(他人的动机、诚信等)
If youimpugn something such as someone's motives or integrity, you imply that they are not entirely honest or honourable.

e.g. The Secretary's letter questions my veracity and impugns my motives...
部长的来信怀疑我的诚实,质疑我的动机。
e.g. All I can hope is that the good name of the Bank will not be impugned in some way.
我所希望的,就是该银行的好名声不要在某些方面受到质疑。

1. impugn

1. 指责：impuberty 前青春期 |impugn 指责 | impulse 冲动

2. 打击：impudicity 无耻 |impugn 打击 |impugnable 可责难的

3. 职责非难：ordeal严格考验 |impugn职责非难 | sully玷污

4. 對[某人的行為.品質等]表示懷疑：Impasse 絕境 |impugn 對[某人的行為.品質等]表示懷疑 | Imprecation 詛咒

• To speak of quackery is not automatically to impugn the motives of unqualified practitioners.

  出自：R. Porter

Rose and I differ somewhat in our definition of art. Not to impugn your work, sir.

我们在艺术上的见解颇有分歧,我不是在批评你的作品.