Synonyms|418Antonyms|8|Broader|0Narrower|0Related|44
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by stealth(expression, adverb, clandestine, furtively, underhandedly)
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cagey(adjective, taciturn, uncommunicative)
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calculating(adjective, secretive, conspiratorial)
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camouflaged(adjective, underhanded, privy)
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catlike(adjective, sneak)
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catty(adjective, sneak)
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caught napping(expression, unknowing, hermetical, unbriefed)
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cautious(adjective, secretive, conspiratorial)
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changed(adjective, unrecognizable)
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changeful(fickle, untrustworthy, unprincipled, dirty-dealing)
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cidevant(isolated, reclusive, uncompanionable)
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circumspect(adjective, secretive, conspiratorial)
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clammed up(expression, adjective, unknowing, taciturn, uncommunicative)
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classified(adjective, restricted)
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cloak-and-dagger(adjective, sly, fraudulent)
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cloaked(adjective, underhanded, privy)
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cloistered(isolated, reclusive, uncompanionable)
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cloistral(isolated, reclusive, uncompanionable)
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close-mouthed(adjective, taciturn, uncommunicative)
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closet(adjective, sly, fraudulent)
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APASmart Define. (2015). under cover thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/under_cover/thesaurus/synonyms
ChicagoSmart Define. 2015. "under cover thesaurus" https://smartdefine.org/under_cover/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, under cover thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/under_cover/thesaurus/synonyms>.
MLASmart Define. "under cover thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/under_cover/thesaurus/synonyms>