- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
33 entries under implausible topic. ×
| preposterous(adjective, false, ridiculous, absurd, bizarre) | |
| incredible(adjective, extraordinary, strange, unreasonable, unbelievable) | |
| unbelievable(adjective, hard, extraordinary, strange, unreasonable) | |
| unlikely(adjective, extraordinary, unusual, strange, unreasonable) | |
| outlandish(adjective, hard, difficult, extraordinary, silly) | |
| far-fetched(adjective, extraordinary, amazing, unlikely) | |
| questionable(adjective, extraordinary, amazing, unlikely, unbelievable) | |
| fantastic(extraordinary, false, strange, silly) | |
| staggering(adjective, extraordinary, strange, amazing, unbelievable) | |
| suspect(extraordinary, unreasonable, amazing, dubious, unlikely) | |
| untenable(unbelievable, improbable) | |
| beyond belief(expression, adjective, extraordinary, amazing) | |
| beyond reason(expression, extraordinary, strange, unbelievable) | |
| extraordinary(strange, amazing, unbelievable, incredible) | |
| fishy(adjective, extraordinary, unreasonable, amazing, dubious) | |
| flimsy(extraordinary, unreasonable, amazing, dubious, unlikely) | |
| imcomprehensible(extraordinary, strange, unbelievable, unthinkable) | |
| incogitable(extraordinary, strange, amazing, unbelievable) | |
| insupposable(extraordinary, strange, unbelievable, improbable) | |
| mind-boggling(adjective, extraordinary, strange, amazing, unbelievable) |
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| APA | Smart Define. (2016). impossible thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/impossible/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "impossible thesaurus" https://smartdefine.org/impossible/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, impossible thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/impossible/thesaurus/synonyms>. |
| MLA | Smart Define. "impossible thesaurus" 9 March 2016. Web. 22 September 2026. <https://smartdefine.org/impossible/thesaurus/synonyms> |