Word主因しゅいんListenYour browser has no Japanese voice, so Listen is not available.How to add a Japanese voiceCommonMeaningsNounprimary cause; main factorIn Spanishcausa principalKanji in this word主因Dictionary data: JMdict and KANJIDIC2, property of the EDRDG, used under its licence (CC BY-SA 4.0).(opens in a new tab)