103 entries under vague topic. ×
| ghostly(dark, superior, mysterious, supernatural) | |
| phantom(dark, superior, mysterious, supernatural) | |
| suspect(uncertain, unreasonable, doubtful, shaky) | |
| tenuous(quiet, weak, sharp, plain, exact) | |
| unsure(adjective, rough, uncertain, unsettled) | |
| wide(adjective, unknown, general, unclear) | |
| unsound(adjective, uncertain) | |
| undependable(adjective, unknown, general, unclear) | |
| adumbral | |
| chimerical | |
| deceitful(adjective, subtle, intangible, indefinable) | |
| dreamy | |
| horrible(adjective, dark, gloomy, murky) | |
| illusory(subtle, indefinable) | |
| imaginary(hidden, unnoticed, unobserved) | |
| inexhaustible(adjective, unknown, general, unclear) | |
| innumerable(adjective, unknown, general, unclear) | |
| multivocal(uncertain, unclear) | |
| open-ended(adjective, unknown, unfixed, unlimited) | |
| polysemous(uncertain, unclear) |
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| APA | Smart Define. (2016). obscure thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/obscure/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "obscure thesaurus" https://smartdefine.org/obscure/thesaurus/synonyms (accessed September 29, 2026). |
| Harvard | Smart Define 2016, obscure thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/obscure/thesaurus/synonyms>. |
| MLA | Smart Define. "obscure thesaurus" 29 March 2016. Web. 29 September 2026. <https://smartdefine.org/obscure/thesaurus/synonyms> |