Privy

One who has a direct, successive relationship to another individual; a coparticipant; one who has an interest in a matter; private.

Privy refers to a person in privity with another—that is, someone involved in a particular transaction that results in a union, connection, or direct relationship with another. Privies in blood are the heirs of an ancestor. Privies in estate are people who succeed or receive an assignment of property, such as a grantor and a grantee, lessor and lessee, or assignor and assignee.