Synonyms to under the surface

cryptic, abstruse, arcane, between the lines, cabalistic, cabbalistic, censored, classified, close, closed, concealed, covert, dark, delitescent, dormant, enigmatic, equivocal, esoteric, evasive, hermetic, hibernating, hidden, hush-hush, incomprehensible, inexplicable, inscrutable, latent, lurking, muffled, murky, mysterious, mystic, mystical, mystifying, nebulous, obfuscated, obscure, obscured, occult, opaque, perplexing, possible, potential, puzzling, recondite, restricted, riddling, secret, secretive, sleeping, smothered, sphinxlike, stifled, strange, submerged, suppressed, tenebrous, top secret, ulterior, unbreatheable, unclear, under security, under wraps, underlying, undisclosable, undisclosed, undivulgable, undivulged, unfathomable, uninformative, unmanifested, unrevealable, unrevealed, unspoken, untellable, untold, unutterable, unuttered, unwhisperable, vague, veiled, virtual, armored, beamless, beclouded, bedazzled, beyond one, black, black as night, blind, blindfold, blindfolded, buried, caliginous, cased, ceiled, cloaked, clouded, coat