Synonyms|290Antonyms|85|Broader|2Narrower|0Related|197

25 entries under hidden topic. ×

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spy(secret, covert)
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stealth(secret, spy, covert)
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sub-rosa(adjective, secret, spy, covert)
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under wraps(expression, secret, spy, covert)
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underhand(secret, spy, covert)
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APASmart Define. (2015). underneath thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underneath/thesaurus/synonyms
ChicagoSmart Define. 2015. "underneath thesaurus" https://smartdefine.org/underneath/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underneath thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underneath/thesaurus/synonyms>.
MLASmart Define. "underneath thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underneath/thesaurus/synonyms>