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
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>
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)
Antonyms disprove, rebut, refute

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