どう 堂にいる Show inflections LinksSentence search for 堂にいるSentence search for どうにいるSentence search for 堂に入るKanji details for 堂Edit in JMdict Expressions (phrases, clauses, etc.), Godan verb with 'ru' ending1. to become an expert; to be master atOther forms堂に入る 【どうにいる】 Discussions Log in to talk about this word.