occult, dark; cryptic, cryptical[obs3]; private, privy, in petto, auricular, clandestine, close, inviolate; tortuous.
     behind a screen &c. 530; undercover, under an eclipse; in ambush, in
hiding, in disguise; in a cloud, in a fog, in a mist, in a haze, in a dark corner; in the shade, in the dark; clouded, wrapped in clouds, wrapt in clouds[obs3]; invisible &c.447; buried, underground, perdu[Fr]; secluded &c. 893.
     undisclosed &c. 529, untold &c. 527; covert &c. (latent) 526;
untraceable; mysterious &c. (unintelligible) 519.
     irrevealable[obs3], inviolable; confidential; esoteric; not to be
spoken of; unmentionable.
     obreptitious[obs3], furtive, stealthy, feline; skulking &c. v.;
surreptitious, underhand, hole and corner; sly &c. (cunning). 702; secretive, evasive; reserved, reticent, uncommunicative, buttoned up; close, close as wax; taciturn &c. 585. 
     Adv. secretly &c. adj.; in secret, in private, in one’s sleeve, in
holes and corners; in the dark &c. adj.
     januis clausis[Lat], with closed doors, a huis clos[Fr]; hugger
mugger, a la derobee[Fr]; under the cloak of, under the rose, under the table; sub rosa[Lat], en tapinois[Fr], in the background, aside, on the sly, with bated breath, sotto voce[Lat], in a whisper, without beat of drum, a la sourdine[obs3].
     behind the veil; beyond mortal ken, beyond the grave, beyond the veil;
hid from mortal vision; into the eternal secret, into the realms supersensible[obs3], into the supreme mystery.
     in confidence, in strict confidence, in strictest confidence;
confidentially &c. adj.; between ourselves, between you and me; between you and me and the bedpost; entre nous[Fr], inter nos, under the seal of secrecy; a couvert[Fr].
     underhand, by stealth, like a thief in the night; stealthily &c. adj.;
behind the scenes, behind the curtain, behind one’s back, behind a screen &c. 530; incognito; in camera. 
     Phr. it must go no further, it will go no further; don’t tell a
soul;"tell it not in Gath,"nobody the wiser; alitur vitium vivitque tegendo[Lat][obs3]; “let it be tenable in your silence still"[Hamlet].
     [confidential disclosure to news reporters] background information,
deep background information, deep background; background session, backgrounder; not for attribution

—­ p. 160 —­

     #529.  Disclosure —­ N. disclosure; retection|; unveiling &c.v.;
deterration[obs3], revealment, revelation; exposition, exposure; expose; whole truth; telltale &c (news) 532.
     acknowledgment, avowal; confession, confessional; shrift.
     bursting of a bubble; denouement.
     [person who discloses a secret] tattletale, snitch, fink, stool
pigeon, canary. 
     V. disclose, discover, dismask|; draw the veil, draw aside the veil,
lift the veil, raise the veil, lift up the veil, remove the veil, tear aside the veil, tear the curtain; unmask,