Inconceivable
Inconceivable adjective - Too extraordinary or improbable to believe.
Usage example: the formerly inconceivable idea that humans could land on the moon
Preposterous is a synonym for inconceivable in illogical topic. In some cases you can use "Preposterous" instead an adjective "Inconceivable", when it comes to topics like impossible, unimaginable.
Nearby Word: inconceivability
Preposterous
Preposterous adjective - Conceived or made without regard for reason or reality.
Usage example: the idea that extraterrestrials built the pyramids is preposterous
Inconceivable is a synonym for preposterous in illogical topic. You can use "Inconceivable" instead an adjective "Preposterous", if it concerns topics such as unimaginable.
Mutual synonyms
Related pairs
- fanciful and inconceivable
- fanciful and preposterous
- outlandish and inconceivable
- outlandish and preposterous
- outrageous and inconceivable
- outrageous and preposterous
- shocking and inconceivable
- shocking and preposterous
- implausible and inconceivable
- implausible and preposterous
- incredible and inconceivable
- incredible and preposterous
- unbelievable and inconceivable
- unbelievable and preposterous
Cite this Source
Preposterous and Inconceivable. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/inconceivable/preposterous
Inconceivable & Preposterous. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/inconceivable/preposterous>.
Preposterous or Inconceivable. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/inconceivable/preposterous.
Google Ngram Viewer shows how "inconceivable" and "preposterous" have occurred on timeline