In predicative use. Chiefly with to (formerly also with †of, or †with clause as complement). Having or sharing in knowledge of (something secret or…

Of a person: Treated as a confidant; entrusted with hidden matters; privy. Obsolete.

That is entrusted with a person's private or secret affairs; that is a confidant; intimate with.

Intimate, privy. rare.

Privy to; = privy, adj. 4a. Also with with. Obsolete.

Sharing the knowledge of something with another, privy. Also with to, of. Obsolete.

confident of (= French confident de): in the private confidence of, privy to. Obsolete.

privy to the knowledge or thoughts of another specified person; cf. fellow-knower n.

Entrusted with secrets; privy to (a secret matter). rare.