Save Gender Masculine Usage Japanese Scripts 鋭夫, 鋭雄, 鋭郎, etc.(Japanese Kanji) Pronounced Pron. E-TSOO-O [key] Meaning & History From Japanese 悦 (etsu) meaning "joy, pleased" combined with 夫 (o) meaning "man, husband", 雄 (o) meaning "hero, manly" or 郎 (o) meaning "son". Other kanji combinations are also possible.