tinfoil hatter

== English == === Alternative forms === tinfoil-hatter === Etymology === From tinfoil hat +‎ -er. === Pronunciation === === Noun === tinfoil hatter (plural tinfoil hatters) (slang, derogatory) A person who believes in or propagates conspiracy theories; a conspiracy theorist. For more quotations using this term, see Citations:tinfoil hatter. ==== Translations ====