- Definitions|2
- Thesaurus|2.2k
- Abbreviations|0
59 entries under underground topic. ×
| concealed(verb, adjective, quiet, cover, show) | |
| secret(adjective, close, quiet, show, separate) | |
| veiled(verb, adjective, obscure, strange, deep) | |
| esoteric(adjective, hard, evil, obscure, strange) | |
| dark(adjective, obscure, mysterious, secret, strange) | |
| obscure(adjective, quiet, cover, hard, difficult) | |
| private(adjective, close, quiet, shy, reserved) | |
| occult(noun, adjective, evil, obscure, dark) | |
| cryptic(adjective, cover, evil, obscure, difficult) | |
| clandestine(adjective, secret, sly, concealment) | |
| mystic(adjective, evil, obscure, solid, dark) | |
| covered(verb, adjective, obscure, secret, unknown) | |
| surreptitious(adjective, secret, clandestine, sneaky) | |
| unseen(adjective, adverb, humble, distant, minor) | |
| obscured(verb, adjective, cover, show, separate) | |
| secluded(adjective, close, quiet, show, humble) | |
| unknown(adjective, obscure, dark, superior, strange) | |
| mysterious(adjective, hard, evil, obscure, solid) | |
| abstruse(adjective, hard, evil, obscure, difficult) | |
| buried(verb, adjective, show, obscure, secret) |
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| APA | Smart Define. (2015). hidden thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hidden/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "hidden thesaurus" https://smartdefine.org/hidden/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, hidden thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hidden/thesaurus/synonyms>. |
| MLA | Smart Define. "hidden thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/hidden/thesaurus/synonyms> |