1) Any political ultraradical 2) Bolshevik 3) Bolshevistic 4) Communism 1) Bolshevik 2) Bolshevistic 3) Bolshie 4) Bolshy 5) Bukharin 6) Lenin 7) Trotsky 
noun a Russian member of the left-wing majority group that followed Lenin and eventually became the Russian communist party
a follower or advocate of the doctrines or methods of the Bolsheviks. · (sometimes l.c.) an ultraradical socialist; any political ultraradical.