おお 大 Common word LinksSentence search for 大Sentence search for おおKanji details for 大Edit in JMdict Prefix1. large; big; great; major; important; serious; heavy; loudSee also 大 だいPrefix2. older; seniorPrefix3. final; ultimatePrefix4. rough; broad; generalWikipedia definition5. Massive Discussions Log in to talk about this word.