52 entries under undisclosed topic. ×
| sub-rosa(secret, clandestine, underground, top-secret) | |
| top-secret(secret, clandestine, underground) | |
| unacknowledged(clandestine, underground) | |
| under-the-table(secret, clandestine, underground, top-secret) | |
| under false pretense(expression, idiom, clandestine, underground) | |
| unenlightened(obscure, unknown, clandestine, underground) | |
| unintelligible(obscure, unknown, clandestine, underground) | |
| unknown(obscure, clandestine, underground, unrevealed) | |
| unpublished(obscure, unknown, clandestine, underground) | |
| unrevealed(adjective, obscure, secret, unknown, clandestine) | |
| unseen(obscure, unknown, clandestine, underground) | |
| veiled(obscure, unknown, clandestine, underground) |
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| APA | Smart Define. (2015). closet thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/closet/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "closet thesaurus" https://smartdefine.org/closet/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, closet thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/closet/thesaurus/synonyms>. |
| MLA | Smart Define. "closet thesaurus" 30 September 2015. Web. 29 September 2026. <https://smartdefine.org/closet/thesaurus/synonyms> |