- Definitions|2
- Thesaurus|188
- Abbreviations|0
56 entries under undisclosed topic. ×
| stealthy(adjective, clandestine, underground) | |
| clandestine(adjective, underground) | |
| confidential(adjective, intimate, secret, private, clandestine) | |
| covert(adjective, clandestine, underground) | |
| furtive(adjective, close, obscure, unknown, clandestine) | |
| surreptitious(adjective, clandestine, underground) | |
| undercover(adjective, clandestine, underground) | |
| underground(adjective, obscure, unknown, clandestine) | |
| underhanded(adjective, clandestine, underground) | |
| cloak-and-dagger(obscure, unknown, clandestine, underground) | |
| clouded(obscure, unknown, clandestine, underground) | |
| conspiratorial(obscure, unknown, clandestine, underground) | |
| covered(obscure, unknown, clandestine, underground) | |
| discreet(close, inside, clandestine, underground) | |
| disguised(obscure, unknown, clandestine, underground) | |
| dissembled(close, clandestine, underground, furtive) | |
| dissimulated(close, inside, clandestine, underground) | |
| enigmatical(obscure, deep, unknown, clandestine, underground) | |
| esoteric(adjective, obscure, unknown, clandestine, underground) | |
| hush-hush(intimate, secret, private, clandestine, underground) |
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| APA | Smart Define. (2013). backdoor thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/backdoor/thesaurus/synonyms |
| Chicago | Smart Define. 2013. "backdoor thesaurus" https://smartdefine.org/backdoor/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2013, backdoor thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/backdoor/thesaurus/synonyms>. |
| MLA | Smart Define. "backdoor thesaurus" 19 May 2013. Web. 27 September 2026. <https://smartdefine.org/backdoor/thesaurus/synonyms> |