みっつう 密通 LinksSentence search for 密通Sentence search for みっつうKanji details for 密 and 通Edit in JMdict Noun, Suru verb, Intransitive verb1. adultery; illicit intercourseNoun, Suru verb, Intransitive verb2. secret communication (e.g. with the enemy) Discussions Log in to talk about this word.