Synonyms|7Antonyms|0|Broader|0Narrower|0Related|0

5 entries under classified topic. ×

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hush-hush
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supersecret
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top secret
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under security restrictions(expression, idiom)
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under wraps(noun, expression)
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APASmart Define. (1970). highly classified thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/highly_classified/thesaurus/synonyms
ChicagoSmart Define. 1970. "highly classified thesaurus" https://smartdefine.org/highly_classified/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 1970, highly classified thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/highly_classified/thesaurus/synonyms>.
MLASmart Define. "highly classified thesaurus" 1 January 1970. Web. 1 October 2026. <https://smartdefine.org/highly_classified/thesaurus/synonyms>