Insubstantial and Nebulous

Insubstantial

Insubstantial adjective - Being of a material lacking in sturdiness or substance.

Nebulous and insubstantial are semantically related. In some cases you can use "Nebulous" instead an adjective "Insubstantial".

Nebulous

Nebulous adjective - Having an often intentionally veiled or uncertain meaning.

Insubstantial and nebulous are semantically related. Sometimes you can use "Insubstantial" instead an adjective "Nebulous".

Nearby Words: nebula, nebulosity, nebulously
Cite this Source
Nebulous and Insubstantial. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/insubstantial/nebulous
Insubstantial & Nebulous. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/insubstantial/nebulous>.
Nebulous or Insubstantial. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/insubstantial/nebulous.
Google Ngram Viewer shows how "insubstantial" and "nebulous" have occurred on timeline