Sincere
Sincere adjective - Genuine in feeling.
Substantial and sincere are semantically related. In some cases you can use "Substantial" instead an adjective "Sincere".
Substantial
Substantial adjective - Having great meaning or lasting effect.
Usage example: substantial changes to the school dress code that made a lot of people unhappy
Sincere and substantial are semantically related. Sometimes you can use "Sincere" instead an adjective "Substantial".
Cite this Source
Substantial and Sincere. (2016). Retrieved 2026, August 07, from https://thesaurus.plus/related/sincere/substantial
Sincere & Substantial. N.p., 2016. Web. 07 Aug. 2026. <https://thesaurus.plus/related/sincere/substantial>.
Substantial or Sincere. 2016. Accessed August 07, 2026. https://thesaurus.plus/related/sincere/substantial.
Google Ngram Viewer shows how "sincere" and "substantial" have occurred on timeline