the.com/revolutionist
A revolutionary who kept the noun and lost the chill.
means Someone who advocates, plans, or fights for the overthrow of an established political or social order.
from From French revolution plus -ist, itself from Latin revolutio, a turning back — wheels of fortune spinning regimes off their thrones around the 1700s.
Older siblingPredates revolutionary as a noun by decades.
Quiet retirementNow mostly outvoted by the snappier revolutionary.
Same rootShares ancestry with revolve and revolt.