Akademik

covert
I adjective clandestine, cloaked, concealed, covered, cryptic, cryptical, dark, delitescent, disguised, furtive, hidden, insidious, invisible, latent, muffled, mysterious, mystic, mystical, nonapparent, occult, out of sight, private, screened, secluded, secret, sheltered, shrouded, sly, sneaky, stealthy, surreptitious, tacit, undercover, underground, underhand, undisclosed, unknown, unobtrusive, unseen, unsuspected, veiled II index allusive, asylum (hiding place), blind (concealed), clandestine, esoteric, evasive, furtive, hidden, impalpable, inconspicuous, indirect, latent, mysterious, personal (private), potential, private (confidential), privy, protection, recondite, refuge, secret, shield, sly, stealthy, surreptitious, undisclosed, unobtrusive

Burton's Legal Thesaurus. . 2006