Impugning

The skeptic was impugning the validity of the research study.

The witness was impugning the defendant's version of events.

The speaker was impugning the audience's intelligence.

He was impugning the credibility of his opponent.

He kept impugning her integrity during the meeting.

The activist was impugning the government's policies.

The teacher was frustrated by the student's constant impugning of her teaching methods.

The teacher was impugning the student's claim of plagiarism.

He was impugning the integrity of the judge in the courtroom.

The athlete was impugning the credibility of his opponent before the match.

The customer was impugning the honesty of the salesperson in the store.

The activist group is impugning the company's ethics in their protest.

He was impugning her credibility during the meeting.

The journalist kept impugning the politician's statement during the press conference.