tinfoil-hatter

Noun

tinfoil hatter (plural tinfoil hatters)

1. (derogatory, slang) A person who believes in or propagates conspiracy theories; a conspiracy theorist.
   • The Washington State Dental Association is backing his $300,000 pro-fluoride campaign. Danelle Weaver and her friends, meanwhile, have raised less than $10,000. But they are undaunted. "People think we are tinfoil hatters," says Weaver, "but we're just average families who take the time to research...2005 October 17, Margot Roosevelt, “Not in My Water Supply”, in Time