Meaning of confidential

Definition of confidential

(adj) entrusted with private information and the confidence of another; "a confidential secretary"
(of information) given in confidence or in secret; "this arrangement must be kept confidential"; "their secret communications"
denoting confidence or intimacy; "a confidential approach"; "in confidential tone of voice"
the level of official classification for documents next above restricted and below secret; available only to persons authorized to see documents so classified

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