undercover as an adjective: - 1
undercover
adjective
1 undercover
Conducted with or marked by hidden aims or methods:
— An undercover investigation.
synonyms: clandestine, cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, secret, surreptitious, underground.
Roget 528:
concealed
etc.
v.;
hidden;
secret,
recondite,
mystic,
cabalistic,
occult,
dark;
cryptic,
cryptical†;
private,
privy,
in petto,
auricular,
clandestine,
close,
inviolate;
tortuous.
behind a screen
etc.
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†;
invisible
etc.
447;
buried,
underground,
perdu [Fr.];
secluded
etc.
893.
undisclosed
etc.
529,
untold
etc.
527;
covert
etc.
(latent)
526;
untraceable;
mysterious
etc.
(unintelligible)
519.
irrevealable†,
inviolable;
confidential;
esoteric;
not to be spoken of;
unmentionable.
obreptitious†,
furtive,
stealthy,
feline;
skulking
etc.
v.;
surreptitious,
underhand,
hole and corner;
sly
etc.
(cunning)
702;
secretive,
evasive;
reserved,
reticent,
uncommunicative,
buttoned up;
close,
close as wax;
taciturn
etc.
585.
... show more
Moby thesaurus: above water, abstruse, armored, at anchor, back-door, backstairs, beclouded, behind the curtain, behind the scenes, behind the veil, blind, buried, cased, ceiled, clandestine, cloaked, close, clouded, coated, concealed, confidential, coped, covered, covert, covertly, cowled, curtained, doggo, eclipsed, encapsulated, encapsuled, encased, enveloped, enwrapped, feline, filmed, floored, furtive, hid, hidden, hidden out, hidlings, high and dry, hole-and-corner, hooded, housed, hugger-mugger, hush-hush, in a cloud, in a corner, in a fog, in a whisper, in ambush, in darkness, in eclipse, in harbor, in hiding, in hidlings, in purdah, in safety, in secret, in the background, in the clear, in the dark, in the wings, incommunicado, latent, loricate, loricated, lurking, mantled, masked, muffled, mysterious, nobody the wiser, obfuscated, obscure, obscured, occult, occulted, on, on tiptoe, out of danger, packaged, past danger, paved, private, privy, prowling, pussyfoot, pussyfooted, quiet, recondite, roofed-in, screened, scummed, secluded, secluse, secret, secretly, sequestered, sheathed, shelled, shielded, shifty, shrouded, skulking, slinking, slinky, sly, sneaking, sneaky, sotto voce, stealing, stealthy, sub rosa, surreptitious, swathed, tented, terra firma, under an eclipse, under cover, under house arrest, under the breath, under the rose, under wraps, under-the-counter, under-the-table, underground, underhand, underhanded, underneath, unknown, unobtrusive, veiled, waiting concealed, walled, walled-in, with bated breath, wrapped, wrapped in clouds ... show more.
debug info: 0.0328