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 none of that could be done without first executing a motion control shot that introduced Splinter and his many clones setting up a stage at a truther convention. —Stacy Lambe, IndieWire, 18 July 2024

According to the Maui truthers, it can be found in the aforementioned Falcon 9 launch photo from May 2018. —Eric Berger, Ars Technica, 15 Aug. 2023

Decidedly not the former liberal feminist writer turned far-out Covid truther Naomi Wolf? —Kate Knibbs, WIRED, 7 Sep. 2023

McMillan is — what’s the best way to put this — not a birthday truther. —Joseph Goodman | [e-mail], al, 4 Aug. 2023

Word History

First Known Use

2005, in the meaning defined above