What is gainsaying?

Gainsaying means to deny or contradict something that is said or claimed by someone else. It involves rejecting or disputing an idea, statement, or opinion put forward by another person. Gainsaying can be used to express disagreement or to challenge a point of view that one believes to be flawed or incorrect. It can be used in both formal and informal contexts and is often employed in debates, arguments, and discussions. Gainsayers are people who tend to criticize or contradict others' opinions without providing any meaningful reasoning.