- Definitions|2
- Thesaurus|760
- Abbreviations|0
51 entries under underground topic. ×
| closet(adjective, clandestine, undisclosed) | |
| ambiguous(clandestine, undisclosed) | |
| cloak-and-dagger(clandestine, undisclosed) | |
| clouded(clandestine, undisclosed) | |
| deep(clandestine, undisclosed) | |
| out-of-the-way(clandestine, undisclosed) | |
| top-secret(clandestine, undisclosed) | |
| unenlightened(clandestine, undisclosed) | |
| unfrequented(clandestine, undisclosed) | |
| unintelligible(clandestine, undisclosed) | |
| unrevealed(unknowing, clandestine, undisclosed, hermetical) |
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| APA | Smart Define. (2015). secretive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/secretive/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "secretive thesaurus" https://smartdefine.org/secretive/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, secretive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/secretive/thesaurus/synonyms>. |
| MLA | Smart Define. "secretive thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/secretive/thesaurus/synonyms> |