Impossible and Inconceivable

Impossible

Impossible adjective - Incapable of being solved or accomplished.
Usage example: fitting everything in my backpack seemed an impossible task

Inconceivable is a synonym for impossible in unimaginable topic. In some cases you can use "Inconceivable" instead an adjective "Impossible", when it comes to topics like unbelievable, unlikely, unthinkable, unachievable. popular alternative

Nearby Words: impossibility, impossibly

Inconceivable

Inconceivable adjective - Too extraordinary or improbable to believe.
Usage example: the formerly inconceivable idea that humans could land on the moon

Impossible is a synonym for inconceivable in unimaginable topic. You can use "Impossible" instead an adjective "Inconceivable", if it concerns topics such as belief, unbelievable, unlikely. popular alternative

Nearby Word: inconceivability
Cite this Source
Inconceivable and Impossible. (2016). Retrieved 2026, July 28, from https://thesaurus.plus/related/impossible/inconceivable
Impossible & Inconceivable. N.p., 2016. Web. 28 Jul. 2026. <https://thesaurus.plus/related/impossible/inconceivable>.
Inconceivable or Impossible. 2016. Accessed July 28, 2026. https://thesaurus.plus/related/impossible/inconceivable.
Google Ngram Viewer shows how "impossible" and "inconceivable" have occurred on timeline