- Definitions|2
- Thesaurus|2.5k
- Abbreviations|0
53 entries under underground topic. ×
| obscure(adjective, hard, solid, dark, strange) | |
| cryptic(adjective, knowledge, evil, obscure, dark) | |
| mystical(adjective, hard, knowledge, evil, obscure) | |
| arcane(adjective, knowledge, evil, obscure, solid) | |
| occult(noun, adjective, knowledge, evil, obscure) | |
| dark(adjective, obscure, hidden, secret, strange) | |
| mystic(adjective, knowledge, evil, obscure, solid) | |
| recondite(adjective, evil, obscure, dark, strange) | |
| abstruse(noun, adjective, hard, evil, obscure) | |
| esoteric(adjective, hard, evil, obscure, dark) | |
| secret(adjective, quiet, evil, obscure, dark) | |
| deep(adjective, hard, evil, obscure, heavy) | |
| hidden(adjective, hard, evil, obscure, solid) | |
| ambiguous(adjective, obscure, dark, uncertain, doubtful) | |
| unintelligible(adjective, hard, obscure, solid, dark) | |
| classified(obscure, unknown, clandestine, undisclosed) | |
| secretive(adjective, strange, secret, private, reticent) | |
| clouded(adjective, obscure, dark, secret, private) | |
| hush-hush(quiet, clandestine, undisclosed, intriguing) | |
| restricted(clandestine, undisclosed) |
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| APA | Smart Define. (2016). mysterious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/mysterious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "mysterious thesaurus" https://smartdefine.org/mysterious/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, mysterious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/mysterious/thesaurus/synonyms>. |
| MLA | Smart Define. "mysterious thesaurus" 24 February 2016. Web. 27 September 2026. <https://smartdefine.org/mysterious/thesaurus/synonyms> |