乱闘らんとう Common Noun Irregular Intransitive English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru intransitive verb confused fight;brawl;melee;scuffle;free-for-all 警官隊はデモ隊と乱闘になった。 The police brawled with the demonstrators.