Synonyms|101Antonyms|1|Broader|0Narrower|0Related|10

4 entries under idiom topic. ×

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off the record(expression, secret)
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on the QT(expression, clandestine, underground, undisclosed)
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under false pretense(expression, clandestine, underground, undisclosed)
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under security restrictions(expression, ranked)
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APASmart Define. (2015). top-secret thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/top-secret/thesaurus/synonyms
ChicagoSmart Define. 2015. "top-secret thesaurus" https://smartdefine.org/top-secret/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, top-secret thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/top-secret/thesaurus/synonyms>.
MLASmart Define. "top-secret thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/top-secret/thesaurus/synonyms>