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not openly made known
e.g. a secret marriage
e.g. a secret bride
Synonym: unavowed
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the next to highest level of official classification for documents
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having an import not apparent to the senses nor obvious to the intelligence
beyond ordinary understanding
e.g. mysterious symbols
e.g. the mystical style of Blake
e.g. occult lore
e.g. the secret learning of the ancients
Synonym: mysterious mystic mystical occult orphic
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not expressed
e.g. secret (or private) thoughts
Synonym: private
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conducted with or marked by hidden aims or methods
e.g. clandestine intelligence operations
e.g. cloak-and-dagger activities behind enemy lines
e.g. hole-and-corner intrigue
e.g. secret missions
e.g. a secret agent
e.g. secret sales of arms
e.g. surreptitious mobilization of troops
e.g. an undercover investigation
e.g. underground resistance
Synonym: clandestine cloak-and-dagger hole-and-corner(a) hugger-mugger hush-hush surreptitious undercover underground
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indulging only covertly
e.g. a secret alcoholic
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communicated covertly
e.g. their secret signal was a wink
e.g. secret messages
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(of information) given in confidence or in secret
e.g. this arrangement must be kept confidential
e.g. their secret communications
Synonym: confidential
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hidden from general view or use
e.g. a privy place to rest and think
e.g. a secluded romantic spot
e.g. a secret garden
Synonym: privy secluded
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designed to elude detection
e.g. a hidden room or place of concealment such as a priest hole
e.g. a secret passage
e.g. the secret compartment in the desk
Synonym: hidden
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not open or public
kept private or not revealed
e.g. a secret formula
e.g. secret ingredients
e.g. secret talks