Wiktionary
n. One who believes in, follows, or advances a conspiracy theory.
Usage examples of "conspiracy theorist".
The conspiracy theorist has got it all figured, he's got the inside angles, and yet he has the perfect excuse for utter cynical torpor.
Dirk was a conspiracy theorist, always sniffing around Todd-Cothran's involvement with international money men, his role in the three currency conference, even his association with your Stonagal chap.
A conspiracy theorist, he believed that a secret cabal ran the nation, that it intended soon to dispense with democracy and impose brutal dictatorial control.
And call me a conspiracy theorist, but isnt there something highly suspicious in the fact that on the very day the book was due to be published, its author drops down dead from a so-called heart attack?
The list of suspects is impressive, the theories about conspiracies in high-government offices as convoluted as any modern conspiracy theorist could want.