Synonyms|108Antonyms|0|Broader|0Narrower|0Related|15
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illegal
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in on the ground floor(expression, idiom, secretly, personally, privately)
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mugger
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mysteriously
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not for publication
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obscure
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obscured(secret, clandestine, underground, underhanded, privy)
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obscurely(adverb, secretly)
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off the cuff(expression, idiom, secretly, personally, privately)
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privy(secret, clandestine, underground, underhanded)
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quietly
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rose
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secrecy
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secretively
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shrouded(secret, clandestine, underground, underhanded, privy)
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sly
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sneakily
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sneakingly
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sub sigillo
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subtle
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APASmart Define. (2015). sub rosa thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/sub_rosa/thesaurus/synonyms
ChicagoSmart Define. 2015. "sub rosa thesaurus" https://smartdefine.org/sub_rosa/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, sub rosa thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/sub_rosa/thesaurus/synonyms>.
MLASmart Define. "sub rosa thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/sub_rosa/thesaurus/synonyms>