老成円熟 ろうせいえんじゅく Meanings Noun experience that comes with age Kanji 老 elderly. Read as ロウ. 成 become. Read as セイ. 円 circle. Read as エン. 熟 ripe. Read as ジュク. Word lists Yojijukugo (四字熟語) Jinuma: Japanese Dictionary · Word lists