abstract, abstruse, airy, anagogic, apply to, arcana, arcane, arcanum, asomatous, astral, baffling, becloud, beclouded, bedarken, bedim, befog, begloom, between the lines, black, black magic, black out, blacken, blanket, blind, block, block the light, blot out, bodiless, bodilessness, brown, buried, bury, cabala, cabalic, cabalism, cabalistic, cabbala, cabbalism, cabbalistic, cache, camouflage, canopy, cast a shadow, censored, classified, classified information, cloak, close, closed, clothe, cloud, cloud over, clouded, conceal, concealed, confidence, confidential communication, cope, cover, cover up, covered, covert, cowl, dark, darken, darken over, decarnate, decarnated, deep, delitescent, dim, dim out, discarnate, disembodied, disguise, dissemble, distract attention from, ditch, dormant, eclipse, eclipsed, eerie, eeriness, elfdom, encloud, encompass with shadow, enigma, enigmatic, ensconce, enshroud, envelop, esoteric, esoterica, ethereal, extramundane, extraterrestrial, faerie, fey, film, ghostliness, ghostly, gloom, gloss over, guarded secret, heavy, hermetic, hermetics, hibernating, hid, hidden, hide, hood, hush-hush, hypernormal, hyperphysical, immaterial, immateriality, immaterialness, impalpability, impalpable, impenetrable, imponderability, imponderable, in a cloud, in a fog, in eclipse, in purdah, in the wings, incommunicado, incomprehensible, incorporate, incorporeal, incorporeality, incorporeity, indecipherable, inexplicable, inextension, inscrutable, insubstantial, intangibility, intangible, keep under cover, latent, lay on, lay over, lurking, magical, mantle, mask, metaphysic, miraculousness, muffle, muffled, murk, mysterious, mysteriousness, mystery, mystery of mysteries, mystic, mystical, mystifying, nonexteriority, nonmaterial, nonphysical, numinous, numinousness, obduce, obfuscate, obfuscated, obnubilate, obscure, obscured, obumbrate, occult
phenomena, occultate, occultism, otherworldliness, otherworldly, overcast, overcloud, overlay, overshadow, overspread, perplexing, personal matter, phantom, possible, potential, preterhuman, preternatural, preternaturalism, preternormal, pretersensual, private, private matter, privileged communication, privity, privy, profound, profound secret, psychic, psychical research, psychicism, psychics, psychism, put on, puzzling, recondite, restricted, restricted information, screen, scum, sealed book, secluded, secluse, secret, secrete, sequestered, shade, shadow, shadowiness, shadowy, shield, shroud, shrouded, sleeping, slur over, smothered, somber, sorcery, spirit world, spiritual, spirituality, spirituousness, spread over, stash, stifled, submerged, superhuman, superhumanity, superimpose, supernatural, supernaturalism, supernaturality, supernaturalness, supernature, supernormal, supernormalness, superphysical, superphysicalness, superpose, supersensible, supersensibleness, supersensual, suppressed, supramundane, supranatural, supranaturalism, supranature, the occult
, the supernatural, the supersensible, the unknown, theosophical, theosophist, top secret, transcendental, transcendentalism, transmundane, ulterior, unbreatheable, under an eclipse, under cover, under house arrest, under security, under the surface, under wraps, underground, underlying, undisclosable, undisclosed, undivulgable, undivulged, unearthliness, unearthly, unembodied, unexplainable, unexplained, unextended, unfathomable, unfleshly, unhuman, unknown, unmanifested, unphysical, unrevealable, unrevealed, unspoken, unsubstantial, unsubstantiality, unsubstantialness, untellable, untold, unutterable, unuttered, unwhisperable, unworldliness, unworldly, vague, varnish, veil, veiled, virtual, weird, whitewash, witchcraft, witchery, wrapped in clouds
unintelligibility, incomprehensibility, imperspicuity, inconceivableness, vagueness, obscurity, ambiguity, doubtful meaning, uncertainty, perplexity, spinosity, obscurum per obscurius, mystification, latency, transcendentalism, paradox, oxymoron, riddle, enigma, puzzle, diagnus vindice nodus, sealed book, steganography, freemasonry, pons asinorum, asses' bridge, high Dutch, Greek, Hebrew, jargon, unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable, incognizable, inexplicable, inscrutable, inapprehensible, incomprehensible, insolvable, insoluble, impenetrable, illegible, as Greek to one, unexplained, paradoxical, enigmatic, enigmatical, puzzling (secret), indecipherable, obscure, dark, muddy, clear as mud, seen through a mist, dim, nebulous, shrouded in mystery, opaque, dense, undiscernible, misty, hidden, latent, indefinite, garbled, perplexed, undetermined, vague, loose, ambiguous, mysterious, mystic, mystical, acroamatic, acroamatical, metempirical, transcendental, occult
, recondite, abstruse, crabbed, inconceivable, inconceptible, searchless, above comprehension, beyond comprehension, past comprehension, beyond one's depth, unconceived, inexpressible, undefinable, incommunicable, unpredictable, unforeseeable, it's Greek to me.
latency, implication, latency, inexpression, hidden meaning, occult
meaning, occultness, mystery, cabala, anagoge, silence, concealment, more than meets the eye, more than meets the ear, Delphic oracle, le dessous des cartes, undercurrent, implication, logical implication, logical consequence, entailment, allusion, insinuation, innuendo, adumbration, something rotten in the state of Denmark, snake in the grass, secret, darkness, invisibility, imperceptibility, latent, lurking, secret, occult
, implied, dormant, abeyant, unapparent, unknown, unseen, in the background, invisible, indiscoverable, dark, impenetrable, unspied, unsuspected, unsaid, unwritten, unpublished, unbreathed, untalked of, untold &c, unsung, unexposed, unproclaimed, undisclosed, unexpressed, not expressed, tacit, undeveloped, solved, unexplained, untraced, undiscovered, untracked, unexplored, uninvented, indirect, crooked, inferential, by inference, by implication, implicit, constructive, allusive, covert, muffled, steganographic, understood, underhand, underground, delitescent, concealed, by a side wind, sub silentio, in the background, behind the scenes, behind one's back, on the tip of one's tongue, secretly, between the lines, thereby hangs a tale, tacitum vivit sub pectore vulnus, where there's smoke, there's fire.
concealment, hiding, occultation, mystification, seal of secrecy, screen, disguise, masquerade, masked battery, hiding place, cryptography, steganography, freemasonry, stealth, stealthiness, sneakiness, obreption, slyness, latitancy, latitation, seclusion, privacy, secrecy, secretness, incognita, reticence, reserve, mental reserve, reservation, arriere pensee, suppression, evasion, white lie, misprision, silence, suppression of truth, underhand dealing, closeness, secretiveness, mystery, latency, snake in the grass, secret, stowaway, concealed, hidden, secret, recondite, mystic, cabalistic, occult
, dark, cryptic, cryptical, private, privy, in petto, auricular, clandestine, close, inviolate, tortuous, behind a screen, 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, invisible, buried, underground, perdu, secluded, undisclosed &c, untold, covert, untraceable, mysterious, irrevealable, inviolable, confidential, esoteric, not to be spoken of, unmentionable, obreptitious, furtive, stealthy, feline, skulking, surreptitious, underhand, hole and corner, sly, secretive, evasive, reserved, reticent, uncommunicative, buttoned up, close, close as wax, taciturn, secretly, in secret, in private, in one's sleeve, in holes and corners, in the dark, januis clausis, with closed doors, a huis clos, hugger mugger, a la derobee, under the cloak of, under the rose, under the table, sub rosa, en tapinois, in the background, aside, on the sly, with bated breath, sotto voce, in a whisper, without beat of drum, a la sourdine, behind the veil, beyond mortal ken, beyond the grave, beyond the veil, hid from mortal vision, into the eternal secret, into the realms supersensible, into the supreme mystery, in confidence, in strict confidence, in strictest confidence, confidentially, between ourselves, between you and me, between you and me and the bedpost, entre nous, inter nos, under the seal of secrecy, a couvert, underhand, by stealth, like a thief in the night, stealthily, behind the scenes, behind the curtain, behind one's back, behind a screen, incognito, in camera, 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, let it be tenable in your silence still, background information, deep background information, deep background, background session, backgrounder, not for attribution.