Pronunciation: (kon"fi-den'shul), [key]
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.)
a. bearing the classification confidential, usually being above restricted and below secret.
b. limited to persons authorized to use information, documents, etc., so classified. Cf. classification (def. 5).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.