1. Noun, Na-adjective (keiyodoshi), Noun which may take the genitive case particle 'no'

   1.

   secret; secrecy; confidentiality; privacy

2. Noun

   2.

   mystery

3. 3.

   secret (e.g. to success)

Example sentences

• 私たちの秘密ね。

  That's our secret.

• 秘密にしとくよ。

  My lips are sealed.