Synonyms and related words :
Bolshevik, Jacobin, Wobbly, anarchist, anarcho-syndicalist, at the height, at the limit, extreme, extreme left-winger, extremist, fanatic, far out, furthest, greatest, kinky, left-wing extremist, lunatic fringe, mild radical, most, nihilist, outre, parlor Bolshevik, parlor pink, pink, pinko, rabid, radical, red, revolutional, revolutionary, revolutionist, sans-culotte, subversive, syndicalist, too much, ultra-ultra, ultraist, utmost, uttermost, way out, yippie