ろうせいえんじゅく 老成円熟 LinksSentence search for 老成円熟Sentence search for ろうせいえんじゅくKanji details for 老, 成, 円 and 熟Edit in JMdict Noun1. experience that comes with ageRare term, Yojijukugo (four character compound) Discussions Log in to talk about this word.