47 entries under clandestine topic. ×

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backstairs(underground, undisclosed)
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camouflaged(obscure, underground, undisclosed, unrevealed)
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classified(obscure, underground, undisclosed, unrevealed)
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cloak-and-dagger(obscure, underground, undisclosed, unrevealed)
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closet(obscure, underground, undisclosed, unrevealed)
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confidential(underground, undisclosed)
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conspiratorial(obscure, underground, undisclosed, unrevealed)
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discreet(underground, undisclosed)
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dissembled(underground, undisclosed)
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dissimulated(underground, undisclosed)
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hush-hush(underground, undisclosed)
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in ambush(expression, underground, undisclosed)
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inside(underground, undisclosed)
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on the QT(expression, idiom, obscure, underground)
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restricted(underground, undisclosed)
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sly(underground, undisclosed)
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sneak(underground, undisclosed)
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sneaky(underground, undisclosed)
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stealthy(underground, undisclosed)
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top-secret(underground, undisclosed)
11 years ago|26k views|share |citing 
APASmart Define. (2015). unknown thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unknown/thesaurus/synonyms
ChicagoSmart Define. 2015. "unknown thesaurus" https://smartdefine.org/unknown/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, unknown thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unknown/thesaurus/synonyms>.
MLASmart Define. "unknown thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/unknown/thesaurus/synonyms>