23 entries under adjective topic. ×
| classified(noun, sensitive, secret, restricted) | |
| hush-hush(noun, secret, restricted, hidden) | |
| secret(sensitive, private, hidden, clandestine) | |
| under wraps(noun, expression, sensitive, underground) | |
| restricted(secret, private, hidden, clandestine) | |
| backdoor(close, sensitive, inside, clandestine) | |
| backstairs(close, sensitive, inside, clandestine) | |
| confidential(secret, private, restricted, hidden) | |
| in ambush(expression, close, sensitive, inside) | |
| sub-rosa(close, sensitive, clandestine, underground) | |
| unacknowledged(close, sensitive, inside, clandestine) | |
| under-the-table(sensitive, clandestine, underground, undisclosed) | |
| under false pretense(expression, idiom, close, sensitive) | |
| buttoned up(expression, sensitive, sub-rosa) | |
| for eyes only(expression, idiom, exceptional, sensitive) | |
| hidden away(expression, sensitive, sub-rosa) | |
| kept concealed(expression, sensitive, sub-rosa) | |
| not for publication(expression, idiom, exceptional, sensitive) | |
| on the QT(expression, idiom, sensitive, private) | |
| privileged(sensitive, private, confidential, sub-rosa) |
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| APA | Smart Define. (2015). top secret thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/top_secret/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "top secret thesaurus" https://smartdefine.org/top_secret/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, top secret thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/top_secret/thesaurus/synonyms>. |
| MLA | Smart Define. "top secret thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/top_secret/thesaurus/synonyms> |