Definitions
1.AdjectiveOf or pertaining to ultraleftism.
2.AdjectiveOf a leftist movement or ideology: extreme and uncompromising; sectarian.
3.AdjectiveExtremely left-wing.
4.NounThe strain or strains of leftism often associated with left communism, which practice rejection of both social democracy and state socialism as well as opposition to Leninism; i.e, ultraleftism.
5.NounThe left communist tendency characterized by a synthesis of Dutch-German council communism and Italian left communism.
6.NounItalian left communism; Bordigism.
7.NounLeftism collectively considered uncompromising and sectarian, especially anti-Leninist Marxism.
8.NounAn adherent of ultraleftism.
9.NounThe most extreme ideologies of the political left.