Authorize and Certify

Authorize

Authorize verb - To give official or legal power to.
Usage example: only the school nurse is authorized to give any necessary shots

Certify is a synonym for authorize in guarantee topic. In some cases you can use "Certify" instead a verb "Authorize", when it comes to topics like approve, legalize.

Certify

Certify verb - To give official or legal power to.
Usage example: certified her as a teacher

Authorize is a synonym for certify in approve topic. You can use "Authorize" instead a verb "Certify", if it concerns topics such as accredit, authorise, legalize, declare as true.

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