- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
68 entries under doubtful topic. ×
| unlikely(adjective, slight, extraordinary, strange, superb) | |
| incredible(adjective, great, excellent, flat, poor) | |
| unbelievable(adjective, great, excellent, flat, poor) | |
| implausible(adjective, great, slight, flat, poor) | |
| questionable(adjective, uncertain, dubious, likely) | |
| dubious(adjective, uncertain, likely, unlikely) | |
| inconceivable(adjective, great, flat, poor, thin) | |
| unconvincing(adjective, great, flat, poor, thin) | |
| absurd(adjective, wild, unreasonable, useless) | |
| far-fetched(adjective, hard, extraordinary, uncertain, fantastic) | |
| weak(adjective, great, poor, extraordinary, strange) | |
| fishy(adjective, uncertain, unreasonable, dubious) | |
| remote(adjective, dubious) | |
| rare(adjective, extraordinary, strange, dubious) | |
| strange(adjective, extraordinary, fantastic, dubious) | |
| dubitable(adjective, uncertain, shaky, unsure) | |
| not likely(expression, adjective, idiom, unreasonable) | |
| slight(adjective, flat, poor, thin, inadequate) | |
| slim(adjective, slight, poor, thin, small) | |
| uncertain(adjective, unsure, likely, unlikely) |
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| APA | Smart Define. (2015). improbable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/improbable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "improbable thesaurus" https://smartdefine.org/improbable/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2015, improbable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/improbable/thesaurus/synonyms>. |
| MLA | Smart Define. "improbable thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/improbable/thesaurus/synonyms> |