重じゅう大だい問もん題だいMeaningsNoun1. serious (vital) question; a grave issue; a matter of grave concernKanji used重heavy大large問question題topicComposed of重じゅう大だいserious; important; significant; grave; weightyNa-adjective問もん題だいquestion (e.g. on a test); problem; problem (e.g. societal, political); question; issue; subject (e.g. of research); case; matter; question (i.e. doubt); public discussion; …Noun