certifying Definition

certify
verb certifies, certified, certifying

tr & intr
1. To declare or confirm officially.

Thesaurus: guarantee, assure, endorse, attest, approve, sanction, accredit, testify, swear, notarize.
2. To declare someone legally insane.
3. To declare to have reached a required standard, passed certain tests, etc. See also certificate.

Derivative: certifier
noun

Etymology: 14c: from Latin certificare, from certus certain + facere to make.