1. (noun)secret something that should remain hidden from others (especially information that is not to be passed on) Synonyms: enigma, closed book, mystery, arcanum Antonyms: open, overt, acknowledged, exoteric, unconcealed, public, unclassified, outward
2. (noun)secret, arcanum information known only to a special group Synonyms: enigma, closed book, mystery, secret, arcanum Antonyms: overt, public, acknowledged, unconcealed, outward, open, unclassified, exoteric
3. (adj)mystery, enigma, secret, closed book something that baffles understanding and cannot be explained Synonyms: arcanum, brain-teaser, whodunit, conundrum, riddle, secret, closed book, enigma, mystery, mystery story Antonyms: open, unclassified, overt, public, outward, unconcealed, exoteric, acknowledged
4. (adj)secret not open or public; kept private or not revealed Synonyms: underground, occult, private, surreptitious, undercover, hugger-mugger, hush-hush, mysterious, mystic, hidden, privy, clandestine, secluded, cloak-and-dagger, orphic, unavowed, confidential, hole-and-corner(a), mystical Antonyms: outward, overt, unclassified, public, unconcealed, open, acknowledged, exoteric
5. (adj)clandestine, cloak-and-dagger, hole-and-corner(a), hugger-mugger, hush-hush, secret, surreptitious, undercover, underground conducted with or marked by hidden aims or methods Antonyms: exoteric, unconcealed, overt, open, public, unclassified, outward, acknowledged
13. (adj)mysterious, mystic, mystical, occult, secret, orphic having an import not apparent to the senses nor obvious to the intelligence; beyond ordinary understanding Synonyms: hole-and-corner(a), occult, underground, unavowed, surreptitious, cryptical, mysterious, mystic, hidden, hush-hush, hugger-mugger, secret, deep, privy, clandestine, secluded, cloak-and-dagger, orphic, inscrutable, private, confidential, cryptic, undercover, mystifying, mystical Antonyms: overt, unconcealed, public, exoteric, acknowledged, open, unclassified, outward
14. (adj)secret the next to highest level of official classification for documents Synonyms: underground, occult, private, surreptitious, undercover, hugger-mugger, hush-hush, mysterious, mystic, hidden, privy, clandestine, secluded, cloak-and-dagger, orphic, unavowed, confidential, hole-and-corner(a), mystical Antonyms: open, overt, public, unconcealed, exoteric, acknowledged, outward, unclassified
Synonyms, Thesaurus & Antonyms of 'secret'
English Synonyms and Antonyms
1. secret That is mysterious in the true sense which is beyond human comprehension, as the decrees of God or the origin of life. That is mystic or mystical which has associated with it some hidden or Synonyms: mysterious, abstruse, inexplicable, recondite, cabalistic, inscrutable, secret, dark, mystic, transcendental, enigmatical, mystical, unfathomable, hidden, obscure, unfathomed, incomprehensible, occult, unknown
Synonyms for secret 
