# truther

> English word · Noun · IPA /ˈtɹuθɚ/ · frequency rank #90,010

## Definitions
1. Someone who tells the truth.
2. Someone who believes that the US government was responsible for the 9/11 attacks.
3. A conspiracy theorist who does not believe the accepted story about some significant event, fact, etc.
4. An advocate, especially for a headcanon.

## Etymology
From truth + -er (occupational suffix) or + -er (“supporter”). For sense 2, directly from name of the 9/11 Truth movement.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/truther