from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Done or communicated in confidence; secret.
- adj. Entrusted with the confidence of another: a confidential secretary.
- adj. Denoting confidence or intimacy: a confidential tone of voice.
- adj. Containing information, the unauthorized disclosure of which poses a threat to national security.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. kept secret within a certain circle of persons; not intended to be known publicly
from the GNU version of the Collaborative International Dictionary of English
- adj. Enjoying, or treated with, confidence; trusted in; trustworthy.
- adj. Communicated in confidence; secret.
from The Century Dictionary and Cyclopedia
- Enjoying the confidence of another; intrusted with secrets or with private affairs: as, a confidential friend or clerk.
- Intended to be treated as private, or kept in confidence; spoken or written in confidence; secret.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. entrusted with private information and the confidence of another
- adj. (of information) given in confidence or in secret
- adj. the level of official classification for documents next above restricted and below secret; available only to persons authorized to see documents so classified
- adj. denoting confidence or intimacy
From Latin confidentia + -al. (Wiktionary)