65 entries under clandestine topic. ×
| underground(obscure, unknown, undisclosed, unrevealed) | |
| underhanded(underground, undisclosed) | |
| unintelligible(obscure, deep, unknown, underground) | |
| unrevealed(obscure, unknown, isolated, underground) | |
| veiled(obscure, unknown, underground, undisclosed) |
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| APA | Smart Define. (2015). retired thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/retired/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "retired thesaurus" https://smartdefine.org/retired/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, retired thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/retired/thesaurus/synonyms>. |
| MLA | Smart Define. "retired thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/retired/thesaurus/synonyms> |