Save Gender Masculine Usage Japanese Scripts 僚敦, 郎大, 呂度, 亮大, 鐐度, etc.(Japanese Kanji) Pronounced Pron. RYO-DA-EE [key] Other Forms FormsRyoudai Meaning & History From 郎 (ryo) meaning "son" and 大 (dai) meaning "large, big, great". Other kanji combinations can be used.