三十代 さんじゅうだい (one's) 30s Meanings also 30代 noun (one's) 30s; thirties Its kanji 三 サン、ゾウ · み、み.つ、みっ.つ three 十 ジュウ、ジッ、ジュッ · とお、と、そ ten 代 ダイ、タイ · か.わる、かわ.る、かわ.り、か.わり、-がわ.り、-が.わり、か.える、よ、しろ substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee In sentences Furigana トムは三十代さんじゅうだい後半こうはんに見みえた。 Tom looked like he was somewhere in his late thirties. #1667760