おおもと 大本 LinksSentence search for 大本Sentence search for おおもとSentence search for 大もとKanji details for 大 and 本Edit in JMdict Noun, Noun which may take the genitive case particle 'no'1. root; origin; source; cause; basis; foundationNoun2. Ōmoto (religion)See also 大本教Other forms大もと 【おおもと】 Discussions Log in to talk about this word.