noun
Refers to the tendency to form or act based on cliques or factions, especially in political or organizational contexts.
その政党は派閥主義で知られている。
That political party is known for factionalism.
派閥 means 'faction' or 'clique', while 派閥主義 is the ideology or practice of factionalism.
Compound of 派閥 (faction, clique) and 主義 (principle, -ism).