confidential: Meaning and Definition of

con•fi•den•tial

1. spoken, written, acted on, etc., in strict privacy or secrecy; secret: a confidential remark.
2. indicating confidence or intimacy; imparting private matters: a confidential tone of voice.
3. having another's trust or confidence; entrusted with secrets or private affairs: a confidential secretary.
4. (of information, a document, etc.)
1. bearing the classification confidential, usually being above restricted and below secret.
2. limited to persons authorized to use information, documents, etc., so classified. Cf. classification (def. 5).