Synonyms|208Antonyms|19|Broader|0Narrower|0Related|34
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secluded(clandestine, underground, undisclosed)
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second-banana
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second-fiddle
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second-string
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secretly(adverb, furtively)
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sensitive
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shrouded(clandestine, underground, undisclosed)
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silent(adjective, sneak, skulking)
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slinky(adjective, sneak, skulking)
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snake in grass(expression, idiom, fickle, untrustworthy, unprincipled)
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spy(adjective, secret, hidden, covert, undercover)
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stealth(adjective, secret, hidden, spy, covert)
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stealthily(adverb, secretly, furtively)
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stop-at-nothing(fickle, untrustworthy, unprincipled, dirty-dealing)
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stop at nothing(expression, idiom, fickle, untrustworthy, unprincipled)
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strange(clandestine, underground, undisclosed)
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to the bottom(expression, idiom, groundward)
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top-secret(secret, clandestine, underground, undisclosed)
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traitorous(fickle, untrustworthy, unprincipled, dirty-dealing)
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treasonable(fickle, untrustworthy, unprincipled, dirty-dealing)
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APASmart Define. (2013). sub-rosa thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/sub-rosa/thesaurus/synonyms
ChicagoSmart Define. 2013. "sub-rosa thesaurus" https://smartdefine.org/sub-rosa/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, sub-rosa thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/sub-rosa/thesaurus/synonyms>.
MLASmart Define. "sub-rosa thesaurus" 28 June 2013. Web. 24 September 2026. <https://smartdefine.org/sub-rosa/thesaurus/synonyms>