- Definitions|2
- Thesaurus|1k
- Abbreviations|0
| insoluble(adjective, unable, answered) | |
| mystic(unfathomable, enigmatic, sphinx-like) | |
| opaque | |
| paradoxical(adjective, unintelligibility) | |
| scrawled(adjective, unintelligible, unreadable) | |
| sphinxlike(dark, uncertain, mysterious, unfathomable, enigmatic) | |
| subtle | |
| tricky | |
| unaccountable(obscure, mysterious, unfathomable, enigmatic, sphinx-like) | |
| uncertain(dark, mysterious, incoherent, incomprehensible, inarticulate) | |
| uncomprehensible | |
| unimaginable | |
| unsolvable | |
| Delphian(dark, uncertain, mysterious) | |
| alchemic | |
| beyond comprehension | |
| blind | |
| cabalistic(unfathomable, enigmatic, sphinx-like) | |
| cabbalistic | |
| cacographic |
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| APA | Smart Define. (2015). indecipherable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/indecipherable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "indecipherable thesaurus" https://smartdefine.org/indecipherable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, indecipherable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/indecipherable/thesaurus/synonyms>. |
| MLA | Smart Define. "indecipherable thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/indecipherable/thesaurus/synonyms> |