All backdoor synonyms

adj backdoor

• secret — done, made, or conducted without the knowledge of others: secret negotiations.
• secret — done, made, or conducted without the knowledge of others: secret negotiations.
• classified — Classified information or documents are officially secret.
• hush-hush — highly secret or confidential: a hush-hush political investigation.
• private — privacy
• intimate — associated in close personal relations: an intimate friend.
• secluded — sheltered or screened from general activity, view, etc.: a secluded cottage.
• covert — Covert activities or situations are secret or hidden.
• undisclosed — to make known; reveal or uncover: to disclose a secret.
• undercover — working or done out of public sight; secret: an undercover investigation.
• mysterious — full of, characterized by, or involving mystery: a mysterious occurrence.
• unknown — not known; not within the range of one's knowledge, experience, or understanding; strange; unfamiliar.
• underground — beneath the surface of the ground: traveling underground by subway.
• furtive — taken, done, used, etc., surreptitiously or by stealth; secret: a furtive glance.
• obscure — (of meaning) not clear or plain; ambiguous, vague, or uncertain: an obscure sentence in the contract.
• unpublished — to issue (printed or otherwise reproduced textual or graphic material, computer software, etc.) for sale or distribution to the public.
• confidential — Information that is confidential is meant to be kept secret or private.
• secretive — secretory.
• surreptitious — obtained, done, made, etc., by stealth; secret or unauthorized; clandestine: a surreptitious glance.
• restricted — confined; limited.
• occult — of or relating to magic, astrology, or any system claiming use or knowledge of secret or supernatural powers or agencies.
• mystic — involving or characterized by esoteric, otherworldly, or symbolic practices or content, as certain religious ceremonies and art; spiritually significant; ethereal.
• deep — If something is deep, it extends a long way down from the ground or from the top surface of something.
• dark — When it is dark, there is not enough light to see properly, for example because it is night.
• unseen — not seen; unperceived; unobserved; invisible.
• close — When you close something such as a door or lid or when it closes, it moves so that a hole, gap, or opening is covered.
• sneak — to go in a stealthy or furtive manner; slink; skulk.
• backstairs — a secondary staircase in a house, esp one originally for the use of servants
• arcane — Something that is arcane is secret or mysterious.
• closet — A closet is a piece of furniture with doors at the front and shelves inside, which is used for storing things.
• inside — on the inner side or part of; within: inside the circle; inside the envelope.
• off the record — making or affording a record.
• privy — participating in the knowledge of something private or secret (usually followed by to): Many persons were privy to the plot.
• secret — done, made, or conducted without the knowledge of others: secret negotiations.
• unofficial — a person appointed or elected to an office or charged with certain duties.
• in private — belonging to some particular person: private property.
• on the qt — on the q.t., stealthily; secretly: to meet someone on the q.t.
• abstruse — You can describe something as abstruse if you find it difficult to understand, especially when you think it could be explained more simply.
• ambiguous — If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
• cloak-and-dagger — A cloak-and-dagger activity is one which involves mystery and secrecy.
• cryptic — A cryptic remark or message contains a hidden meaning or is difficult to understand.
• disguised — to change the appearance or guise of so as to conceal identity or mislead, as by means of deceptive garb: The king was disguised as a peasant.
• mystical — mystic; of or relating to supernatural agencies, affairs, occurrences, etc.: a strange, mystical experience.
• out-of-the-way — remote from much-traveled, frequented, or populous regions; secluded: an out-of-the-way inn up in the hills.
• recondite — dealing with very profound, difficult, or abstruse subject matter: a recondite treatise.
• reticent — disposed to be silent or not to speak freely; reserved.
• retired — withdrawn from or no longer occupied with one's business or profession: a retired banker.
• strange — unusual, extraordinary, or curious; odd; queer: a strange remark to make.
• under wraps — to enclose in something wound or folded about (often followed by up): She wrapped her head in a scarf.
• unenlightened — to give intellectual or spiritual light to; instruct; impart knowledge to: We hope the results of our research will enlighten our colleagues.