Authenticate and Substantiate

Authenticate

Authenticate verb - To give evidence or testimony to the truth or factualness of.
Usage example: we require more than simply your word to authenticate this story

Substantiate is a synonym for authenticate in support topic. In some cases you can use "Substantiate" instead a verb "Authenticate", when it comes to topics like prove, confirm, show, genuine. popular alternative

Substantiate

Substantiate verb - To gain full recognition or acceptance of.
Usage example: substantiated his claim to local mountaineering fame with a photo of himself on the summit of Mount McKinley

Authenticate is a synonym for substantiate in prove topic. You can use "Authenticate" instead a verb "Substantiate", if it concerns topics such as idea, support, confirm, show. popular alternative

Cite this Source
Substantiate and Authenticate. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/authenticate/substantiate
Authenticate & Substantiate. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/authenticate/substantiate>.
Substantiate or Authenticate. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/authenticate/substantiate.
Google Ngram Viewer shows how "authenticate" and "substantiate" have occurred on timeline