秘 ひ Meanings Noun secret; mystery See also: 秘中の秘 (ひちゅうのひ). Kanji 秘 secret. Read as ヒ. Words containing 秘 秘密 (ひみつ) secret 秘書 (ひしょ) (private) secretary 神秘 (しんぴ) mystery And 158 more. Jinuma: Japanese Dictionary · Word lists