25 entries under underground topic. ×
| sub rosa(expression, secret, clandestine, underhanded) | |
| under-the-table(secret, hidden, clandestine, underhanded) | |
| underhand(secret, hidden, clandestine, underhanded) | |
| underhanded(secret, hidden, clandestine, privy) | |
| unsuspected(secret, hidden, clandestine, underhanded) |
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| APA | Smart Define. (2016). buried thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/buried/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "buried thesaurus" https://smartdefine.org/buried/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, buried thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/buried/thesaurus/synonyms>. |
| MLA | Smart Define. "buried thesaurus" 3 April 2016. Web. 26 September 2026. <https://smartdefine.org/buried/thesaurus/synonyms> |