- Definitions|2
- Thesaurus|279
- Abbreviations|0
56 entries under undisclosed topic. ×
| out-of-the-way(clandestine, underground) | |
| recondite(clandestine, underground) | |
| retired(clandestine, underground) | |
| secluded(clandestine, underground) | |
| shrouded(unknowing, clandestine, underground, hermetical) | |
| strange(clandestine, underground) | |
| top-secret(clandestine, underground) | |
| under wraps(expression, sensitive, clandestine, underground) | |
| unenlightened(clandestine, underground) | |
| unfrequented(clandestine, underground) | |
| unintelligible(clandestine, underground) | |
| unknown(clandestine, underground) | |
| unpublished(clandestine, underground) | |
| unrevealed(unknowing, clandestine, underground, hermetical) | |
| unseen(clandestine, underground) | |
| veiled(clandestine, underground) |
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| APA | Smart Define. (2015). backstairs thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/backstairs/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "backstairs thesaurus" https://smartdefine.org/backstairs/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2015, backstairs thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/backstairs/thesaurus/synonyms>. |
| MLA | Smart Define. "backstairs thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/backstairs/thesaurus/synonyms> |