# tinfoil hatter

> English word · Noun

## Definitions
1. A person who believes in or propagates conspiracy theories; a conspiracy theorist.

## Etymology
From tinfoil hat + -er.

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