Cŏn'fi-dĕn'tial, a.

a. [Fr. confidentiel, It. confidenziale.]

1. Enjoying, or treated with, confidence; trusted in; trustworthy; as, a confidential servant or clerk.
2. Communicated in confidence; privately intrusted; secret. “Confidential messages.” Burke.

Confidential communication (Law), one made by a client to his counsel, solicitor, or attorney, in professional confidence, and which he is not permitted to divulge;—called also privileged communication.