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

Collins, a 9/11 truther and QAnon convert who sports a black MAGA hat and custom dental fangs, moved to rural Shawmut, Montana, in 2016 to build a bug-out — an off-grid fortress suitable for waiting out a plague or world war — and raise horses with his wife, Starla. —Tessa Stuart, Rolling Stone, 17 Feb. 2026

That left a gaping void into which extraterrestrial truthers could put just about anything. —Bethy Squires, Vulture, 16 Feb. 2026

Bandwagon fandom truthers may find this especially galling. —Joe Rexrode, New York Times, 16 Jan. 2026

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

Word History

First Known Use

2005, in the meaning defined above

Rhymes for truther

• uther