gainsay

American  

[geyn-sey, geyn-sey] / ˈgeɪnˌseɪ, geɪnˈseɪ /

verb (used with object)

gainsaid, gainsaying

1. to deny, dispute, or contradict.

2. to speak or act against; oppose.

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gainsay British  

/ ɡeɪnˈseɪ /

verb

1. archaic (tr) to deny (an allegation, a statement, etc); contradict

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Other Word Forms

• gainsayer noun
• ungainsaid adjective

Etymology

Origin of gainsay

First recorded in 1250–1300, gainsay is from the Middle English word gainsaien. See again, say ¹

Explanation

Gainsay, a verb, means "contradict" or "speak out against." When you challenge authority, you gainsay, as in teachers don't like it when unruly students gainsay them. Gainsay comes from an Old English word that means "contradict" or "say against," as in, "no one dared gainsay the principal, who is well-known for giving detention to students who so much as frown at him." If you know someone who constantly corrects others, tells them that they're wrong, and says, "That's not true," more than anyone else, you have first-hand experience with the art of the gainsay.

Example Sentences

Since June, it’s been harder to gainsay him.

From The Wall Street Journal • Oct. 24, 2025

As an Episcopal priest, I’d be the last person to gainsay the importance of prayer.

From Los Angeles Times • Apr. 27, 2022

He’s only bringing it up to gainsay it: The best revenge, he argues, is revenge.

From Slate • Feb. 26, 2020

Why anyone would gainsay efforts as generous as Bilbao and, judging from photographs, the Vuitton museum, or would ambush, with a nasty question, the man who made them beggars comprehension.

From The New Yorker • Oct. 27, 2014

Martin admitted he didn’t know the meanings of gainsay and ravening.

From "The Underground Railroad: A Novel" by Colson Whitehead