30 entries under expression topic. ×

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keeping back(verb, phrasal verb)
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masked battery(idiom, concealment)
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private knowledge
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professional secret
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red herring(noun, cover, disguise, cover-up)
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seal of secrecy(idiom, concealment)
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sub rosa
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time alone(space, solitude)
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top secret
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under cover
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APASmart Define. (2015). secrecy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/secrecy/thesaurus/synonyms
ChicagoSmart Define. 2015. "secrecy thesaurus" https://smartdefine.org/secrecy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, secrecy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/secrecy/thesaurus/synonyms>.
MLASmart Define. "secrecy thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/secrecy/thesaurus/synonyms>