They oppose any crazy crime writer

Usage examples of naysayers.

And the doubters and naysayers who abound in oppressed countries may catch on that just the three richest men in America own more personal assets than the combined assets owned by the entire populations of the sixty poorest countries.

This is a firmly established scientific fact, whatever various naysayers may say.

Arthur had courted laughter in many forms these last few months and he had been met with automatic laughter, polite laughter, nervous, scattered, and derisive laughter, and by the mocking laughter of naysayers who were more amusing than Arthur, so that the restless audience pivoted in their chairs and attended the alternative performance.