マル秘 まるひ Also written 丸秘 Meanings の-adjective confidential; secret; classified (refers to the ㊙ symbol) Kanji 秘 secret. Read as ヒ. Example sentences このことはマル秘で。Keep this information under your hat. Words containing マル秘 マル秘資料 (まるひしりょう) top-secret data Jinuma: Japanese Dictionary · Word lists