What's the adjective for reformist? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs reform and reformalize which may be used as adjectives within certain contexts.
reformed
Corrected; amended; restored to purity or excellence; said, specifically, of the whole body of Protestantchurches originating in the Reformation, or, in a more restricted sense, of those who separated from Martin Luther on the doctrine of consubstantiation, etc., and carried the Reformation, as they claimed, to a higher point.
Amended in character and life.
(Britain, military, of an officer) Retained in service on half or full pay after the disbandment of the company or troop.