A revolutionist; a person who revolts.
Of or pertaining to a revolution in government; tending to, or promoting, revolution
pertaining to something that portends of great change; overthrowing a standing mindset
pertaining to something that revolves
A strict follower of a doctrine.
One who believes dogmatically in something regardless of evidence or even conclusive proof that the thing is false or was staged; one who has true-believer syndrome.
Used other than figuratively or idiomatically: see true, believer.