- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
49 entries under extraordinary topic. ×
| unlikely(adjective, slight, strange, superb) | |
| incredible(adjective, great, excellent, flat, poor) | |
| unbelievable(adjective, great, excellent, flat, poor) | |
| implausible(adjective, great, slight, flat, poor) | |
| doubtful(adjective, uncertain, fantastic, dubious) | |
| inconceivable(adjective, great, flat, poor, thin) | |
| unconvincing(adjective, great, flat, poor, thin) | |
| far-fetched(adjective, hard, uncertain, fantastic) | |
| impossible(adjective, wild, strange, unbelievable) | |
| fantastic(adjective, great, excellent, strange) | |
| weak(adjective, great, poor, strange) | |
| thin(adjective, weak, great, poor) | |
| amazing(great, excellent, superb, super) | |
| astonishing(great, excellent, superb, super) | |
| preposterous(adjective, fantastic, amazing, unbelievable) | |
| rare(adjective, strange, doubtful, dubious) | |
| strange(adjective, fantastic, doubtful, dubious) | |
| unsubstantial(adjective, thin, strange, unreasonable) | |
| handsome(great, excellent, superb, super) | |
| suspect(uncertain, unreasonable, doubtful, dubious) |
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| APA | Smart Define. (2015). improbable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, improbable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>. |
| MLA | Smart Define. "improbable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms> |