Impugn vs. Oppugn

Impugnverb

To assault, attack.

Impugnverb

(transitive) To verbally assault, especially to argue against an opinion, motive, or action; to question the truth or validity of.

Impugnverb

To attack by words or arguments; to contradict; to assail; to call in question; to make insinuations against; to gainsay; to oppose; as, to impugn a person's integrity.

Impugnverb

attack as false or wrong

Impugnverb

dispute the truth, validity, or honesty of (a statement or motive); call into question

Oppugnverb

To contradict or controvert; to oppose; to challenge or question the truth or validity of a given statement.

Oppugnverb

To fight against; to attack; to be in conflict with; to oppose; to resist.

Oppugnverb

challenge the accuracy, probity, or propriety of;