- Definitions|2
- Thesaurus|1.8k
- Abbreviations|0
53 entries under clandestine topic. ×
| sneaky(underground, undisclosed) | |
| stealthy(underground, undisclosed) | |
| sub-rosa(underground, undisclosed) | |
| top-secret(underground, undisclosed) | |
| top secret(expression, underground, undisclosed) | |
| unacknowledged(underground, undisclosed) | |
| under-the-table(underground, undisclosed) | |
| under false pretense(expression, idiom, underground, undisclosed) | |
| underhand(underground, undisclosed) | |
| underhanded(underground, undisclosed) | |
| unenlightened(obscure, unknown, underground, undisclosed) | |
| unfrequented(obscure, unknown, underground, undisclosed) | |
| unpublished(obscure, unknown, underground, undisclosed) |
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| APA | Smart Define. (2015). abstruse thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/abstruse/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "abstruse thesaurus" https://smartdefine.org/abstruse/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, abstruse thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/abstruse/thesaurus/synonyms>. |
| MLA | Smart Define. "abstruse thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/abstruse/thesaurus/synonyms> |