55 entries under underground topic. ×
| occult(noun, adjective, knowledge, evil, obscure) | |
| mysterious(adjective, knowledge, evil, obscure, solid) | |
| mystical(adjective, knowledge, evil, obscure, dark) | |
| secret(adjective, hard, evil, obscure, dark) | |
| cryptic(adjective, knowledge, evil, obscure, dark) | |
| arcane(adjective, knowledge, evil, obscure, solid) | |
| esoteric(adjective, evil, obscure, dark, deep) | |
| dark(adjective, evil, obscure, solid, superior) | |
| recondite(adjective, evil, obscure, dark, deep) | |
| hidden(adjective, evil, obscure, solid, dark) | |
| abstruse(adjective, evil, obscure, dark, deep) | |
| ambiguous(adjective, obscure, strange, uncertainty, vague) | |
| deep(adjective, hard, evil, obscure, heavy) | |
| confidential(adjective, clandestine, undisclosed) | |
| surreptitious(adjective, secret, unknown, hidden) | |
| undercover(adjective, secret, unknown, hidden) | |
| secretive(clandestine, undisclosed) | |
| strange(obscure, unknown, clandestine, undisclosed) | |
| unintelligible(adjective, obscure, solid, dark, superior) | |
| cloak-and-dagger(obscure, unknown, clandestine, undisclosed) |
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| APA | Smart Define. (2015). mystic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/mystic/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "mystic thesaurus" https://smartdefine.org/mystic/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, mystic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/mystic/thesaurus/synonyms>. |
| MLA | Smart Define. "mystic thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/mystic/thesaurus/synonyms> |