秘密 Traditional form: 秘密 Pinyin (reading): mìmì Definitions: secret; private; confidential; clandestine a secret (CL:個/个 (gè)) Characters: 秘 - secret, mysterious, abstruse 密 - secret, confidential; intimate, close; dense, thick Traditional characters: 秘 - secret, mysterious, abstruse 密 - secret, confidential; intimate, close; dense, thick