covert

1 screened or sequestered from view a covert little hideaway that provides a lot of privacy Synonyms cloistered, secluded, hidden, isolated, quiet, remote, retired, secret, shelteredRelated Words lone, lonely, lonesome, reclusive, solitary; privateNear Antonyms obvious, visible; exposed

2 undertaken or done so as to escape being observed or known by others a covert operation to provide aid to the rebels Synonyms backstairs, behind-the-scenes, clandestine, secret, furtive, hole-and-corner, hugger-mugger, hush-hush, private, privy, sneak, sneaking, sneaky, stealth, stealthy, surreptitious, undercover, underground, underhand, underhandedRelated Words back-channel, closed-door, off-the-books, off-the-record; classified, confidential, restricted, top secret, undisclosed; concealed, hidden, secreted, subterranean, unadvertised, unexposedNear Antonyms acknowledged, avowed; aboveboard, straightforward, unconcealed, undisguised; unclassified, unrestricted; clear, evident, manifest, obvious, patent, plainAntonyms open, overt, public