Definition of confidential:
privy, familiar, undercover, closet, occult, hushed, classified, mystic, mysterious, inside, secluded, orphic, hole-and-corner, private, show, attitude, surreptitious, close, behind-the-scenes, unavowed, cloak-and-dagger, in strict confidence, secret, secretive, shadowy, underground, auricular, mystical, near, familiar, hugger-mugger, nonpublic, study at familiar, privileged, hidden.
- "The Red Planet", William J. Locke.
- "Newton Forster", Frederick Marryat.
- "One of Our Conquerors, Complete", George Meredith Last Updated: March 7, 2009.