revisionist

from WordNet (r) 3.0 (2006)

revisionist
    n 1: a Communist who tries to rewrite Marxism to justify a
         retreat from the revolutionary position

from Moby Thesaurus II by Grady Ward, 1.0

42 Moby Thesaurus words for "revisionist":
      Bolshevik, Bolshevist, Castroite, Communist, Communist sympathizer,
      Fabian, Leninist, Maoist, Marxist, Marxist-Leninist, Red,
      Stalinist, Titoist, Trotskyist, Trotskyite, avowed Communist,
      bolshie, commie, communistic, corrective, emendatory, extremist,
      fellow traveler, gradualistic, meliorist, melioristic,
      progressionist, progressist, progressive, progressivist, radical,
      reformational, reformative, reformatory, reformer, reformist,
      reformistic, revisional, revisory, revolutionary, utopian,
      utopist