43 entries under clandestine topic. ×

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dissembled(underground, undisclosed)
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dissimulated(underground, undisclosed)
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enigmatical(obscure, unknown, underground, undisclosed)
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furtive(obscure, unknown, 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, unknown)
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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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strange(obscure, unknown, underground, undisclosed)
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sub-rosa(underground, undisclosed)
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top-secret(underground, undisclosed)
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top secret(expression, 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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underhand(underground, undisclosed)
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underhanded(underground, undisclosed)
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APASmart Define. (2015). unseen thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unseen/thesaurus/synonyms
ChicagoSmart Define. 2015. "unseen thesaurus" https://smartdefine.org/unseen/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unseen thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unseen/thesaurus/synonyms>.
MLASmart Define. "unseen thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/unseen/thesaurus/synonyms>