[with obj.]dispute the truth, validity, or honesty of (a statement or motive); call into question 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 impugnable adjective impugnment noun 语源
late Middle English (also in the sense 'assault, attack physically'): from Latin impugnare 'assail', from in- 'towards' + pugnare 'fight'