empugn

Verb

impugn (third-person singular simple present impugns, present participle impugning, simple past and past participle impugned)

1. (obsolete, transitive) To assault, attack.
2. (transitive) To verbally assault, especially to argue against an opinion, motive, or action; to question the truth or validity of; cast doubt on.
   • For quotations using this term, see Citations:impugn.

   Synonyms:

   call into question, challenge, contest, contradict, deny, disavow, dispute, oppugn, negate, question

   Antonyms:

   authenticate, endorse, support