Insubstantial
Insubstantial adjective - Being of a material lacking in sturdiness or substance.
Without substance and insubstantial are semantically related. In some cases you can use "Without substance" instead an adjective "Insubstantial".
Without substance
Insubstantial and without substance are semantically related. You can use "Insubstantial" instead an adjective phrase "Without substance".
Mutual synonyms
Cite this Source
Without substance and Insubstantial. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/insubstantial/without_substance
Insubstantial & Without substance. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/insubstantial/without_substance>.
Without substance or Insubstantial. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/insubstantial/without_substance.
Google Ngram Viewer shows how "insubstantial" and "without substance" have occurred on timeline