Learn how to say Certifiers correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word certify:
verb (certifies, certifying, certified)
attest or confirm in a formal statement:
the profits for the year had been certified by the auditors
the Law Society will certify that the sum charged is fair and reasonable
chiefly 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
officially declare insane.
Middle English: from Old French certifier, from late Latin certificare, from Latin certus ‘certain’