Synonyms for Hidden:

adj.

all (adjective)
obscure, secret.
concealed (adjective)
camouflaged, hush-hush, covert, censored, disguised, buried, Screened, Obscured, masked, concealed, blind, secret, withheld, cloaked, stealthy, enshrouded, anonymous.
deep (adjective)
hermetic.
incomprehensible (adjective)
impenetrable.
invisible (adjective)
dark, camouflaged, covert, invisible, imperceptible, indiscernible, unapparent, latent, Obscured, concealed, unobservable.
latent (adjective)
latent, unrevealed, veiled, unapparent, invisible, buried, camouflaged, unobservable, covert, unexposed, clandestine, concealed.
leafy (adjective)
shaded.
private (adjective)
inward.
secluded (adjective)
cloistered, Screened.
secret (adjective)
esoteric.
shady (adjective)
veiled, Obscured, covered, Screened, shady, shaded.
ulterior (adjective)
Obscured.
unrecognizable (adjective)
disguised.
unseen, secret (adjective)
concealed, clouded, shadowy, undetected, cloaked, esoteric, withheld, disguised, cryptic, invisible, obscure, Screened, latent, clandestine, ulterior, veiled, indiscernible, covered, masked, dark, hermetic, unexposed, buried, covert, unrevealed.

a. / adv.

out of sight (adjective, adverb)
out of sight.

n.

flag, location, signpost, Among, give up, trace, accessible, placement, quarry. show. blind. ulterior. hidden (noun)
obscure, invisible, out of sight, concealed, secret, buried, unseeable.
mysterious (noun)
cryptic, magic, symbolical.
secret (noun)
secret.

v.

concealed (verb)
hushed, blinded, covered up, Hid.
disappeared (verb)
sunk, melted, Went, Sank, Fled, faded, flied, departed, Evanesced, vanished, evaporated, Disappeared, dissolved, gone.
harbored (verb)
protected, Harbored.
imagined (verb)
unseen.
screened (verb)
Hid, covered, enshrouded, Screened.
shaded (verb)
curtained, covered, veiled, shaded.

Other synonyms:

quarry, signpost, strange, location, unsuspected. trace, ulterior, flag, Among, placement, inward. accessible, uncertain. give up. personal. enigmatic
cryptic.
hidden
subterranean.

Usage examples for hidden

  1. The dead man, the dead man, the hidden dead man on the bed! – The Queen of Hearts by Wilkie Collins Last Updated: January 3, 2009
  2. Let the gentleman see that we haven't got his grandmother hidden under my son's bed. – The Outcaste by F. E. Penny
  3. Yes, it is curious, how much may lie hidden in a person. – Mogens and Other Stories Mogens; The Plague At Bergamo; There Should Have Been Roses; Mrs. Fonss by Jens Peter Jacobsen