| Main Entry: | |
| Part of Speech: | adjective |
| Definition: | personal, intimate |
| Synonyms: | behind the scenes, clandestine, close to one's chest, closet, confidential, discreet, exclusive, hush-hush, hushed, independent, individual, inside, nonpublic, not open, off the record, own, particular, privy*, reserved, secret, separate, special, under one's hat, unofficial |
| Antonyms: | open, public, sociable |
| Main Entry: | secluded |
| Part of Speech: | adjective |
| Definition: | isolated, sheltered |
| Synonyms: | abandoned, alone, aloof, beleaguered, blockaded, cloistered, close, closet, confidential, covert, cut off, deserted, hermetic, hidden, incommunicado, insular, isolate, lonely, lonesome, off the beaten track, out-of-the-way, personal, private, quarantined, quiet, reclusive, remote, removed, reserved, retired, screened, secluse, seclusive, secret, segregated, sequestered, shut off, shy, singular, solitary, tucked away, unapproachable, unfrequented, uninhabited, unsociable, withdrawn |
| Antonyms: | joining, mingling, open, public, sociable, socializing |
| Main Entry: | secret |
| Part of Speech: | adjective |
| Definition: | underhand, clandestine |
| Synonyms: | backdoor, backstairs, camouflaged, classified, close, confidential, covert, cryptic, discreet, disguised, dissembled, dissimulated, furtive, hush-hush, in ambush, incognito, inside, restricted, secretive, sly, sneak, sneaky, stealthy, sub-rosa, surreptitious, top secret, unacknowledged, under false pretense, under-the-table, underhanded |
| Antonyms: | aboveboard, known, legal, legitimate, public |
| Main Entry: | thick |
| Part of Speech: | adjective |
| Definition: | friendly |
| Synonyms: | chummy, close, confidential, cordial, devoted, familiar, hand in glove, inseparable, intimate, on good terms |
| Antonyms: | unfriendly, unsociable |
| Main Entry: | undercover |
| Part of Speech: | adjective |
| Definition: | secret, spy |
| Synonyms: | clandestine, concealed, confidential, covert, creep, furtive, hidden, hole-and-corner, hush-hush, incognito*, intelligence, on the QT, private, stealth, stealthy, sub-rosa, surreptitious, under wraps, underground, underhand, underneath |
| Antonyms: | known, open, public |
| Main Entry: | off the record |
| Part of Speech: | adjective, adverb |
| Definition: | not for the record |
| Synonyms: | between us, confidential, eyes-only, for no other ears, in confidence, not for publication, not to be quoted, on the QT, sensitive, unofficial, within these four walls |
| Main Entry: | under one's hat |
| Part of Speech: | adverb |
| Definition: | kept quiet |
| Synonyms: | buttoned up, confidential, private, secret, under wraps |
| Main Entry: | unlisted |
| Part of Speech: | adjective |
| Definition: | not listed |
| Synonyms: | confidential, not recorded, not reported, private, unpublicized, unrecorded, unregistered, unreported |
| Antonyms: | listed, public, recorded, registered |
| Main Entry: | undisclosed |
| Part of Speech: | adjective |
| Definition: | not disclosed |
| Synonyms: | concealed, confidential, hidden, sealed, secret, unrevealed |
| Antonyms: | disclosed |