D defs.my
Entry 2 senses Webster, 1913

Confidential

/känˌ-fəd-ĕn'-shəl/ · Con·fi·den·tial · IPA /ˌkɑːnfɪˈdɛnʃl/
01 a. Enjoying, or treated with, confidence; trusted in; trustworthy; as, a confidential servant or clerk.
  1. 1.
    Enjoying, or treated with, confidence; trusted in; trustworthy; as, a confidential servant or clerk.
  2. 2.
    Communicated in confidence; secret.
Phrases & compounds
Confidential communication — See Privileged communication, under Privileged.
Confidential creditors — those whose claims are of such a character that they are entitled to be paid before other creditors.
Confidential debts — debts incurred for borrowed money, and regarded as having a claim to be paid before other debts.