Save Gender Masculine Usage Japanese Scripts 定大, 定裕, 貞裕, 貞大, etc.(Japanese Kanji) Pronounced Pron. SAH-DAH-KHEE-RO [key] Meaning & History From Japanese 定 (sada) meaning "determine, establish, decide" or 貞 (sada) meaning "virtue, faithfulness, chastity" combined with 裕 (hiro) meaning "abundant", or 大 (hiro) meaning "big, great". Other kanji combinations are possible.