Sentences with Gainsay

I cannot gainsay the fact that he has worked hard for his success.

The scientists presented data that no one could gainsay, proving their theory.

The scientist did not gainsay the evidence supporting the theory of evolution.

The historian would never gainsay the importance of preserving ancient artifacts.

The captain had to gainsay the crew's request for an impractical route.

Despite the evidence, she continued to gainsay the existence of climate change.