impugn
/ɪmˈpjuːn/verb
with obj.
- dispute the truth, validity, or honesty of (a statement or motive); call into question（对真实、有效或诚实等）质疑, 怀疑：
the father does not impugn her capacity as a good mother.
父亲不怀疑她作为一位好母亲的能力。
派生词
impugnable
adjectiveimpugnment
noun词源
late Middle English （also in the sense 'assault， attack physically'）： from Latin impugnare 'assail'， from in- 'towards' + pugnare 'fight'.