マル秘ひ

noun which may take the genitive case particle 'no'

confidential; secret; classified

Often used in official or business contexts to mark documents or information as confidential. The term originates from the ㊙ symbol, which is a circled 秘 (secret).

• この書しょ類るいはマル秘ひ扱あつかいです。

  This document is treated as confidential.

• マル秘ひ情じょう報ほうが漏もれた。

  Classified information was leaked.