しんこうふか 親交を深める Show inflections LinksSentence search for 親交を深めるSentence search for しんこうをふかめるKanji details for 親, 交 and 深Edit in JMdict Expressions (phrases, clauses, etc.), Ichidan verb1. to develop a relationship; to build intimacy; to deepen a friendship; to get acquainted Discussions Log in to talk about this word.