Check
Check noun - Additional proof that something that was believed (some fact or hypothesis or theory) is correct.
Substantiation is a synonym for check. In some cases you can use "Substantiation" instead a noun "Check".
Substantiation
Substantiation noun - Additional proof that something that was believed (some fact or hypothesis or theory) is correct.
Cite this Source
Substantiation and Check. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/check/substantiation
Check & Substantiation. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/check/substantiation>.
Substantiation or Check. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/check/substantiation.
Google Ngram Viewer shows how "check" and "substantiation" have occurred on timeline