- Definitions|2
- Thesaurus|896
- Abbreviations|0
225 entries under adjective topic. ×
| unimaginable(belief, unreasonable, useless, size) | |
| unthinkable(unusual, belief, exceptional, unreasonable) | |
| impossible(extraordinary, belief, unreasonable, dubious) | |
| incredible(great, flat, poor, thin) | |
| unbelievable(great, obscure, flat, poor) | |
| implausible(great, flat, poor, thin) | |
| improbable(great, flat, poor, thin) | |
| fantastic(unusual, belief, strange, superb) | |
| absurd(unreasonable, useless, doubtful, dubious) | |
| preposterous(obscure, unreasonable, useless, absurd) | |
| incomprehensible(belief, understandable) | |
| unlikely(light, obscure, thin, belief) | |
| rare(obscure, extraordinary, unusual, belief) | |
| doubtful(extraordinary, unreasonable, amazing, dubious) | |
| extraordinary(great, unusual, belief, strange) | |
| staggering(extraordinary, belief, amazing, astonishing) | |
| strange(light, thin, unusual, belief) | |
| thin(light, weak, great, poor) | |
| unconvincing(great, flat, poor, thin) | |
| unheard-of(obscure, belief, exceptional, marvelous) |
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| APA | Smart Define. (2015). inconceivable thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/inconceivable/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "inconceivable thesaurus" https://smartdefine.org/inconceivable/thesaurus/synonyms (accessed September 24, 2026). |
| Harvard | Smart Define 2015, inconceivable thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/inconceivable/thesaurus/synonyms>. |
| MLA | Smart Define. "inconceivable thesaurus" 14 April 2015. Web. 24 September 2026. <https://smartdefine.org/inconceivable/thesaurus/synonyms> |