[con.fi.den.tial] adj (1759) 1: marked by intimacy or willingness to confide "a ~ tone"
2: private, secret "~ information"
3: entrusted with confidences "~ clerk"
4: containing information whose unauthorized disclosure could be prejudicial to the national interest--compare secret, top secret -- con.fi.den.ti.al.i.ty n -- con.fi.den.tial.ly adv