自じ発はつTop 15000MeaningsNoun1. spontaneity2. spontaneous passiveKanji used自self発let outPitch accentじはつUsed in vocabulary自じ発はつ的てきspontaneous; voluntaryNa-adjective自じ発はつ性せいself-motivation; spontaneity; spontaneousnessNoun自じ発はつ核かく分ぶん裂れつspontaneous fissionNoun