Certify and Decertify

Opposite meaning words

Certify verb - Authorize officially.

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Decertify is an antonym for certify.

Decertify verb - Cause to be no longer approved or accepted.

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Certify is an antonym for decertify.

Cite this Source

Decertify and Certify. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/certify/decertify

Certify & Decertify. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/certify/decertify>.

Decertify or Certify. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/certify/decertify.

Google Ngram Viewer shows how "certify" and "decertify" have occurred on timeline