Impugnable

The medieval castle was impugnable due to its high walls and strong defenses.

The scientist's theory was impugnable as it was based on decades of research and experimentation.

The report was impugnable and backed by extensive research.

The artist's technique was impugnable, and art critics found several flaws in his work.

The defendant's alibi was impugnable during the trial.

The research methodology was impugnable and raised questions about the validity of the results.

The accuracy of the information provided by the source was impugnable, and it was relied upon for decision making.

His credentials were impugnable, so the hiring committee rejected his application.

The logic behind the argument was impugnable and logically sound.

The company's financial reports were impugnable, so investors were hesitant to invest.

His argument was impugnable because of the lack of evidence.

The athlete's reputation was impugnable, and he was accused of cheating in several competitions.

The security measures in place were not impugnable and the bank was robbed.

The results of the survey were impugnable because of the small sample size.

The evidence presented by the prosecutor was impugnable and lacked credibility.

The morale of the team was impugnable after the loss.

The historian's analysis was impugnable, and her interpretation of events was widely accepted.

The impugnable evidence against the defendant led to his acquittal.

The witness's testimony was impugnable and held up under cross-examination.