Save Gender Masculine Usage Japanese Scripts 哀絶(Japanese Kanji) Pronounced Pron. I-ZET-SOO [key] Meaning & History From 哀 (Ai) meaning “Sorrow” and 絶 (Zetsu) meaning “Absolutely”. These two kanji 哀絶 together can mean “Sadness”.This character is known from Demon Slayer most commonly.