revolutionary

1 a person who favors rapid and sweeping changes especially in laws and methods of government after the collapse of the Russian monarchy, the moderate socialists briefly governed until being overthrown by the Bolshevik revolutionaries Synonyms crazy, extremist, radical, revolutionistRelated Words young Turk; leftist, lefty, red; progressive, reformer, reformist; anarch, anarchist, subversive; agitator, insurgent, insurrectionist, rebel; secessionist, separationist, separatistNear Antonyms conservative, fuddy-duddy, reactionary, rightist, standpatter, Tory, traditionalistAntonyms middle-of-the-roader, moderate

2 a person who rises up against authority at first the government was not worried about this small band of unarmed revolutionaries Synonyms insurgent, insurrectionary, insurrectionist, mutineer, red, revolter, rebel, revolutionistRelated Words challenger, defier, insubordinate, oppositionist, recusant, refuser, resistant, resister; anarch, anarchist; discontent, extremist, malcontent, radicalNear Antonyms loyalist, patriot, supporter; counterinsurgent, counterrevolutionary, counterrevolutionist