Online Google Dictionary

impugn 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/imˈpyo͞on/,
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impugned, past participle; impugns, 3rd person singular present; impugning, present participle; impugned, past tense;
  1. Dispute the truth, validity, or honesty of (a statement or motive); call into question
    • - the father does not impugn her capacity as a good mother

  1. attack as false or wrong
  2. To assault, attack; To verbally assault, especially to argue against an opinion, motive, or action; to question the truth or validity of
  3. 1. to challenge as false (another's statements, motives, etc.); cast doubt upon. 2. Archaic. to assail (a person) by words or arguments; vilify. 3. Obs. to attack (a person) physically. —Syn. 1. attack, asperse, malign, criticize, censure.
  4. (v) - question, challenge