Unsubstantial and Unconceivable

Unsubstantial

Unsubstantial adjective - Not composed of matter.

Unconceivable and unsubstantial are semantically related in likely topic. In some cases you can use "Unconceivable" instead an adjective "Unsubstantial".

Nearby Word: unsubstantially

Unconceivable

Unconceivable adjective - Too extraordinary or improbable to believe.

Unsubstantial and unconceivable are semantically related in likely topic. Sometimes you can use "Unsubstantial" instead an adjective "Unconceivable".
Cite this Source
Unconceivable and Unsubstantial. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/unsubstantial/unconceivable
Unsubstantial & Unconceivable. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/unsubstantial/unconceivable>.
Unconceivable or Unsubstantial. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/unsubstantial/unconceivable.
Google Ngram Viewer shows how "unsubstantial" and "unconceivable" have occurred on timeline