Definition of certify in English:

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Pronunciation: /ˈsəːtɪfʌɪ/

verb (certifies, certifying, certified)

[with object]
1Attest or confirm in a formal statement: the profits for the year had been certified by the auditors [with clause]: the Law Society will certify that the sum charged is fair and reasonable
More example sentences
  • He certifies the statements made above are correct and complete.
  • He was certified dead at Fairfield General Hospital.
  • The man, in his early 20s, was certified dead at the scene.
verify, guarantee, attest, validate, ratify, warrant, confirm, corroborate, substantiate, endorse, vouch for, testify to, provide evidence of, authenticate, document;
1.1chiefly British Officially recognize as possessing certain qualifications or meeting certain standards: scenes of violence had to be cut before the film could be certified (as adjective certified) a certified accountant
More example sentences
  • Choke holds should be taught only by qualified and certified instructors.
  • To do the review we wanted pathologists who were board certified and had extensive clinical experience, and we wanted to limit the number of reviewers to only a few.
  • I was board certified in general surgery in 1991, and in plastic surgery in 1993.
accredit, recognize, license, authorize, approve, warrant;
empower, qualify, endorse, sanction, vouch for, put one's seal of approval on, appoint, give a certificate to, give a diploma to
1.2Officially declare insane.
Example sentences
  • With the exception of those who can be certified insane, these homeless people cannot be detained anywhere against their will.
  • My husband and I have been happily married for 27 years and are known to be certified insane.
  • Only four of the eighteen are, or have been, certified insane.



Pronunciation: /ˈsəːtɪfʌɪə/
Example sentences
  • Research shows a high level of mistakes made by certifiers at all levels of doctors, from housemen to consultants and including GPs.
  • I understand there was no intention to do away with private certifiers, but that is exactly what will happen.
  • Mr. Clay for the claimants on the other hand argues that in building contracts there is a continuum of decision makers spreading from certifiers (usually architects or engineers) to the House of Lords.


Middle English: from Old French certifier, from late Latin certificare, from Latin certus 'certain'.

For editors and proofreaders

Line breaks: cer|tify

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