Fundamental
Fundamental adjective - Of or relating to the simplest facts or theories of a subject.
Substantial and fundamental are semantically related. In some cases you can use "Substantial" instead an adjective "Fundamental".
Substantial
Substantial adjective - Having great meaning or lasting effect.
Fundamental and substantial are semantically related. Sometimes you can use "Fundamental" instead an adjective "Substantial".
Cite this Source
Substantial and Fundamental. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/fundamental/substantial
Fundamental & Substantial. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/fundamental/substantial>.
Substantial or Fundamental. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/fundamental/substantial.
Google Ngram Viewer shows how "fundamental" and "substantial" have occurred on timeline