v., -fied, -fy·ing, -fies. v.tr.
- To confirm formally as true, accurate, or genuine.
- To guarantee as meeting a standard: butter that was certified Grade A. See synonyms at approve.
- To acknowledge in writing on the face of (a check) that the signature of the maker is genuine and that there are sufficient funds on deposit for its payment.
- To issue a license or certificate to.
- To declare to be in need of psychiatric treatment or confinement.
- Archaic. To inform positively; assure.
To testify: certify to the facts.
[Middle English certifien, from Old French certifier, from Late Latin certificāre : Latin certus, certain; see certain + Latin -ficāre, -fy.]
certifier cer'ti·fi'er n.
