- Definitions|1
- Thesaurus|295
- Abbreviations|0
102 entries under adjective topic. ×
| unsustainable(defended, verbal attack) | |
| arcane(difficult, strange, hidden, unfathomable) | |
| extraordinary(strange, unfathomable, puzzling) | |
| indecipherable(unfathomable, enigmatic, inexplicable, sphinx-like) | |
| insoluble | |
| magical | |
| obscure | |
| preternatural | |
| absurd(defended, verbal attack) | |
| astonishing(strange, unfathomable, puzzling) | |
| bizarre | |
| cryptic | |
| extreme(defended, verbal attack) | |
| fabulous | |
| fantastic | |
| groundless(defended, verbal attack) | |
| illogical(defended, verbal attack) | |
| indefensible(defended, verbal attack) | |
| indescribable | |
| inexplainable |
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| APA | Smart Define. (2015). unexplainable thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/unexplainable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unexplainable thesaurus" https://smartdefine.org/unexplainable/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, unexplainable thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/unexplainable/thesaurus/synonyms>. |
| MLA | Smart Define. "unexplainable thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/unexplainable/thesaurus/synonyms> |