57 entries under clandestine topic. ×

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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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sub-rosa(underground, undisclosed)
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surreptitious(underground, undisclosed)
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top-secret(underground, undisclosed)
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top secret(expression, underground, undisclosed)
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unacknowledged(underground, undisclosed)
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under-the-table(underground, undisclosed)
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under false pretense(expression, idiom, underground, undisclosed)
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under wraps(expression, underground, undisclosed)
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undercover(underground, undisclosed)
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underground(obscure, unknown, undisclosed, unrevealed)
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underhand(underground, undisclosed)
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underhanded(underground, undisclosed)
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undisclosed(obscure, unknown, underground, unrevealed)
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unrevealed(obscure, unknown, underground, undisclosed)
<123>
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APASmart Define. (2015). enigmatical thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/enigmatical/thesaurus/synonyms
ChicagoSmart Define. 2015. "enigmatical thesaurus" https://smartdefine.org/enigmatical/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, enigmatical thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/enigmatical/thesaurus/synonyms>.
MLASmart Define. "enigmatical thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/enigmatical/thesaurus/synonyms>