- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
49 entries under underground topic. ×
| cloak-and-dagger(obscure, unknown, clandestine, undisclosed) | |
| closet(obscure, unknown, clandestine, undisclosed) | |
| conspiratorial(obscure, unknown, clandestine, undisclosed) | |
| stealthy(clandestine, undisclosed) | |
| underhand(clandestine, undisclosed) | |
| underhanded(clandestine, undisclosed) | |
| unenlightened(obscure, unknown, clandestine, undisclosed) | |
| unfrequented(obscure, unknown, clandestine, undisclosed) | |
| unpublished(obscure, unknown, clandestine, undisclosed) |
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| APA | Smart Define. (2016). cryptic thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/cryptic/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "cryptic thesaurus" https://smartdefine.org/cryptic/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, cryptic thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/cryptic/thesaurus/synonyms>. |
| MLA | Smart Define. "cryptic thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/cryptic/thesaurus/synonyms> |