成年者 せいねんしゃ Meanings Noun adult; person of full age Kanji 成 become. Read as セイ. 年 year. Read as ネン. 者 person. Read as シャ. Words containing 成年者 未成年者 (みせいねんしゃ) minor 未成年者喫煙禁止法 (みせいねんしゃきつえんきんしほう) Act on Prohibition of Smoking by Minors 未成年者略取 (みせいねんしゃりゃくしゅ) child abduction And 1 more. Jinuma: Japanese Dictionary · Word lists