- Definitions|1
- Thesaurus|1.2k
- Abbreviations|0
52 entries under obscure topic. ×
| impenetrable(adjective, solid, dark, superior) | |
| unfathomable(adjective, hard, difficult, solid) | |
| unintelligible(adjective, solid, dark, superior) | |
| incomprehensible(adjective, solid, dark, strange) | |
| inconceivable(adjective, extraordinary, belief, fantastic) | |
| unknown(adjective, dark, superior, strange) | |
| enigmatic(adjective, solid, strange, odd) | |
| hidden(adjective, solid, dark, superior) | |
| inexplicable(adjective, solid, dark, strange) | |
| mystic(adjective, solid, dark, superior) | |
| numinous(adjective, dark, superior, mysterious) | |
| secret(adjective, dark, superior, strange) | |
| unrevealed(adjective, dark, superior, supernatural) | |
| abnormal(adjective, dark, superior, mysterious) | |
| celestial(adjective, dark, superior, mysterious) | |
| concealed(adjective, dark, superior, strange) | |
| difficult(adjective, dark, strange, odd) | |
| extrasensory(adjective, dark, superior, supernatural) | |
| fabulous(adjective, dark, superior, mysterious) | |
| fairy(adjective, dark, superior, mysterious) |
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| APA | Smart Define. (2015). unknowable thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unknowable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unknowable thesaurus" https://smartdefine.org/unknowable/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2015, unknowable thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unknowable/thesaurus/synonyms>. |
| MLA | Smart Define. "unknowable thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/unknowable/thesaurus/synonyms> |