Certify and Substantiate

Certify

Certify verb - To give evidence or testimony to the truth or factualness of.
Usage example: please bring in a doctor's note to certify that you were really sick

Substantiate is a synonym for certify in verify topic. In some cases you can use "Substantiate" instead a verb "Certify", when it comes to topics like confirm.

Substantiate

Substantiate verb - To give evidence or testimony to the truth or factualness of.
Usage example: Mr. MacGregor couldn't substantiate that it was Peter, and not some other rabbit, in the cabbage patch

Certify is a synonym for substantiate in confirm topic. You can use "Certify" instead a verb "Substantiate".

Cite this Source
Substantiate and Certify. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/certify/substantiate
Certify & Substantiate. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/certify/substantiate>.
Substantiate or Certify. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/certify/substantiate.
Google Ngram Viewer shows how "certify" and "substantiate" have occurred on timeline