いん 因をなす Show inflections LinksSentence search for 因をなすSentence search for いんをなすSentence search for 因を成すKanji details for 因Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'su' ending1. to give rise to; to causeOther forms因を成す 【いんをなす】 Discussions Log in to talk about this word.