ないつう 内通 LinksSentence search for 内通Sentence search for ないつうKanji details for 内 and 通Edit in JMdict Noun, Suru verb, Intransitive verb1. secret communication (with the enemy); collusion; betrayalNoun, Suru verb, Intransitive verb2. adultery; (extramarital) affair Discussions Log in to talk about this word.