Substantial
Substantial adjective - Having great meaning or lasting effect.
Secular and substantial are semantically related. In some cases you can use "Secular" instead an adjective "Substantial".
Secular
Secular adjective - Not involving religion or religious matters.
Usage example: that's an issue for the secular authorities, not the church
Substantial and secular are semantically related. Sometimes you can use "Substantial" instead an adjective "Secular".
Cite this Source
Secular and Substantial. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/substantial/secular
Substantial & Secular. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/substantial/secular>.
Secular or Substantial. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/substantial/secular.
Google Ngram Viewer shows how "substantial" and "secular" have occurred on timeline