- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
52 entries under underground topic. ×
| secret(adjective, evil, obscure, dark, strange) | |
| recondite(adjective, sound, easy, evil, sharp) | |
| occult(noun, adjective, evil, obscure, dark) | |
| hidden(verb, adjective, hard, evil, obscure) | |
| abstruse(noun, adjective, hard, sound, easy) | |
| cryptic(adjective, evil, sharp, obscure, dark) | |
| deep(adjective, hard, sound, easy, evil) | |
| arcane(adjective, evil, obscure, strange, deep) | |
| mysterious(adjective, hard, evil, obscure, dark) | |
| mystic(adjective, evil, obscure, dark, deep) | |
| mystical(adjective, hard, evil, obscure, dark) | |
| confidential(adjective, secret, private, clandestine) | |
| ambiguous(obscure, unknown, unclear, clandestine) | |
| classified(obscure, secret, unknown, clandestine) | |
| undercover(adjective, secret, unknown, hidden) | |
| conspiratorial(obscure, unknown, clandestine, undisclosed) | |
| furtive(adjective, obscure, strange, unknown, clandestine) | |
| hush-hush(clandestine, undisclosed) | |
| restricted(secret, clandestine, undisclosed, confidential) | |
| strange(adjective, obscure, unknown, clandestine) |
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| APA | Smart Define. (2015). esoteric thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/esoteric/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "esoteric thesaurus" https://smartdefine.org/esoteric/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, esoteric thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/esoteric/thesaurus/synonyms>. |
| MLA | Smart Define. "esoteric thesaurus" 30 July 2015. Web. 23 September 2026. <https://smartdefine.org/esoteric/thesaurus/synonyms> |