Insubstantial
Insubstantial adjective - Being of a material lacking in sturdiness or substance.
Unhealthy and insubstantial are semantically related in health topic. In some cases you can use "Unhealthy" instead an adjective "Insubstantial", when it comes to topics like feeble.
Unhealthy
Unhealthy adjective - Bad for the well-being of the body.
Insubstantial and unhealthy are semantically related in health topic. Sometimes you can use "Insubstantial" instead an adjective "Unhealthy", if it concerns topics such as feeble.
Nearby Word: unhealthily
Cite this Source
Unhealthy and Insubstantial. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/insubstantial/unhealthy
Insubstantial & Unhealthy. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/insubstantial/unhealthy>.
Unhealthy or Insubstantial. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/insubstantial/unhealthy.
Google Ngram Viewer shows how "insubstantial" and "unhealthy" have occurred on timeline