Certify Definition

sûrtə-fī

certified, certifies, certifying

verb

certified, certifies, certifying

To declare (a thing) true, accurate, certain, etc. by formal statement, often in writing; verify; attest.

Webster's New World

To testify (to)

Webster's New World

To guarantee as meeting a standard.

Butter that was certified Grade A.

American Heritage

To guarantee the quality or worth of (a check, document, etc.); vouch for.

Webster's New World

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.

American Heritage

Synonyms:

Antonyms:

Origin of Certify

Middle English certifien from Old French certifier from Late Latin certificāre Latin certus certain certain Latin -ficāre -fy

From American Heritage Dictionary of the English Language, 5th Edition
From Old French certefier (“confirm, assure, make certain”). Compare French certifier.

From Wiktionary