: one who denies, refuses, opposes, or is skeptical or cynical about something There are always naysayers who say it can't be done.

What part of speech is naysayer?

NAYSAYER (noun) definition and synonyms | Macmillan Dictionary.

What is an example of a naysayer?

Naysayers are termed as such because their favorite response is “nay.” Say you want to quit drinking alcohol. They'll go “nay” and tell you that drinking a few more mugs won't kill you.