'Reformist' definitions:

Definition of 'reformist'

From: WordNet
adjective
Favoring or promoting reform (often by government action) [syn: progressive, reformist, reform-minded]
noun
A disputant who advocates reform [syn: reformer, reformist, crusader, social reformer, meliorist]

Definition of 'Reformist'

From: GCIDE
  • Reformist \Re*form"ist\, n. [Cf. F. r['e]formiste.] A reformer. [1913 Webster]