Certify and Demonstrate

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

Demonstrate is a synonym for certify in activity topic. In some cases you can use "Demonstrate" instead a verb "Certify", when it comes to topics like bear witness to.

Demonstrate

Demonstrate verb - To show the existence or truth of by evidence.
Usage example: the paleontologist hopes to demonstrate that dinosaurs once existed in central Peru by unearthing the fossil evidence

Certify is a synonym for demonstrate in activity topic. You can use "Certify" instead a verb "Demonstrate".

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