- Definitions|2
- Thesaurus|279
- Abbreviations|0
56 entries under undisclosed topic. ×
| clandestine(adjective, underground) | |
| surreptitious(adjective, clandestine, underground) | |
| secret(adjective, sensitive, clandestine, underground) | |
| stealthy(adjective, clandestine, underground) | |
| underground(adjective, clandestine) | |
| underhand(adjective, clandestine, underground) | |
| sneaky(adjective, clandestine, underground) | |
| underhanded(adjective, clandestine, underground) | |
| sly(adjective, clandestine, underground) | |
| hidden(unknowing, clandestine, underground, hermetical) | |
| confidential(adjective, restricted, clandestine, underground, discreet) | |
| hush-hush(clandestine, underground) | |
| occult(clandestine, underground) | |
| under-the-table(sensitive, unknowing, clandestine, underground) | |
| arcane(adjective, clandestine, underground) | |
| camouflaged(close, clandestine, underground, furtive) | |
| classified(sensitive, clandestine, underground, sub-rosa) | |
| closet(adjective, clandestine, underground) | |
| discreet(close, restricted, inside, clandestine, underground) | |
| disguised(clandestine, underground) |
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| APA | Smart Define. (2015). backstairs thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/backstairs/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "backstairs thesaurus" https://smartdefine.org/backstairs/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2015, backstairs thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/backstairs/thesaurus/synonyms>. |
| MLA | Smart Define. "backstairs thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/backstairs/thesaurus/synonyms> |