らんこう 乱交 Wanikani level 19 Play audio LinksSentence search for 乱交Sentence search for らんこうKanji details for 乱 and 交Edit in JMdict Noun, Suru verb, Intransitive verb, Noun which may take the genitive case particle 'no'1. promiscuity; group sex Discussions Log in to talk about this word.