Definitions

1. verb

to challenge or attack the validity or truth of something, especially a statement or an argument

“The journalist impugned the politician’s claims as misleading.”

2. noun

the act of challenging or attacking the validity or truth of something

“The scandal was the result of an impugnment of the company’s financial records.”

3. verb

to challenge or attack someone’s character or reputation

“The witness was accused of impugning the defendant’s honesty.”