Often used in legal situations to challenge a statement or evidence. The defense attorney impugned the reliability of the DNA evidence.
Pro Tip 2/3
Negative Connotation
Carries a negative tone, suggesting disagreement or doubt about quality or truthfulness. Journalists may impugn a politician's statement if it contradicts facts.
Pro Tip 3/3
Formal Speech
Used in formal or serious discussions, not in casual conversation. The scholar impugned the new theory during the conference.