certify

certify

verb

Definition of CERTIFY

1

to declare (something) to be true or genuine <experts certified the letter as indeed having been written by Abraham Lincoln>

Synonyms attest, authenticate, avouch, testify (to), vouch (for), witness

Related Words guarantee, warrant; affirm, assert, aver, avow, profess, vow

2

to give official or legal power to <certified her as a teacher>

Synonyms accredit, certify, charter [British], commission, empower, enable, invest, license (also licence), qualify, vest, warrant

Related Words approve, clear, credential, endorse (also indorse), OK (or okay), sanction; affirm, confirm, validate; inaugurate, induct, initiate, install, instate, swear in; allow, let, permit; enfranchise, entitle, privilege

Near Antonyms ban, bar, block, constrain, deny, disallow, disbar, discourage, disenfranchise, disfranchise, exclude, hinder, hold back, impede, inhibit, obstruct, prevent, shut out, stop; enjoin, forbid, interdict, outlaw, prohibit, proscribe, veto

Antonyms disqualify

3

to give evidence or testimony to the truth or factualness of <please bring in a doctor's note to certify that you were really sick>

Synonyms argue, attest, authenticate, bear out, certify, corroborate, substantiate, support, validate, verify, vindicate

Related Words avouch, back (up), testify (to), vouch (for), witness; guarantee, warrant; affirm, assert, aver, avow, declare, profess; demonstrate, document, establish, prove, reinforce (also reenforce)

Near Antonyms contradict, gainsay; deny, disavow, disclaim; challenge, contest, dispute, question

Antonyms disprove, rebut, refute