privity

noun

1. (obsolete) A divine mystery; something known only to God, or revealed only in holy scriptures.

2. (obsolete) A private matter, a secret.

3. (now rare, archaic) Privacy, secrecy.

4. (archaic, in the plural) The genitals.

5. (law) A relationship between parties seen as being a result of their mutual interest or participation in a given transaction, contract etc.