- Definitions|1
- Thesaurus|686
- Abbreviations|0
60 entries under special topic. ×
| inimitable(unusual, rare) | |
| irregular(excellent, unusual, brilliant, rare) | |
| nondescript(unusual, rare) | |
| notable(excellent, unusual, brilliant, rare) | |
| novel(unusual, rare) | |
| original(extraordinary, unusual, remarkable, rare) | |
| out of the way(expression, idiom, unusual, rare) | |
| outre(unusual, rare) | |
| particular(extraordinary, exceptional, marvelous, remarkable) | |
| queer(extraordinary, unusual, exceptional, remarkable) | |
| seldom(light, thin, unusual, rare) | |
| sporadic(light, thin, unusual, rare) | |
| superior(excellent, unusual, brilliant, rare) | |
| surprising(unusual, exceptional, marvelous, rare) | |
| unaccustomed(unusual, rare) | |
| unconventional(unusual, rare) | |
| unfamiliar(unusual, exceptional, marvelous, rare) | |
| unorthodox(unusual, rare) | |
| unparalleled(extraordinary, unusual, exceptional, remarkable) | |
| very different(expression, unusual, rare) |
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Unthinkable on
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| APA | Smart Define. (2015). unthinkable thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unthinkable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "unthinkable thesaurus" https://smartdefine.org/unthinkable/thesaurus/synonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, unthinkable thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unthinkable/thesaurus/synonyms>. |
| MLA | Smart Define. "unthinkable thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/unthinkable/thesaurus/synonyms> |