Save Gender Masculine Usage Japanese Scripts 瑞男, 水男, etc.(Japanese Kanji) Pronounced Pron. MEE-ZOO-O [key] Meaning & History From Japanese 瑞 (mizu) meaning "felicitous omen, auspicious" or 水 (mizu, sui) meaning "water" combined with 男 (o) meaning "man, male". Other kanji combinations can form this name.