truther

noun

truth·​er ˈtrü-thər 

plural truthers

: someone who believes that the truth about an important subject or event is being concealed from the public by a powerful conspiracy

He isn't a 9/11 truther, as some erroneously allege, but he has his fair share of "out there" beliefs.

—Felix Biederman

But it is not flattering to be called a "truther." The term originated, as far as anyone can tell, to characterize people who embraced alternative explanations for the Sept. 11 attacks.

—Mark Leibovich

… a so-called "truther," come to convince me that various gun massacres were staged by the federal government.

—Fred Grimm

Examples of truther in a Sentence

Recent Examples on the Web

But last month, the Justice Department and FBI stunned right-wing Epstein truthers with a short memo declaring that there was no evidence of a client list, nor that Epstein was murdered as part of a massive cover-up. —Miles Klee, Rolling Stone, 11 Aug. 2025

To be clear: Naomi Klein is a climate journalist, and Naomi Wolf used to be a feminist but is now a Covid truther. —Adrienne So, Wired News, 1 May 2025

But above all, the prime directive for both QAnon and the tariff truthers is the same: Trust the process. —Charlie Warzel, The Atlantic, 9 Apr. 2025

But taking staffing advice on national security from a 9/11 truther also qualifies as news. —Tal Axelrod, Axios, 6 Apr. 2025

Word History

First Known Use

2005, in the meaning defined above

Rhymes for truther

• uther