Results

Definition of authenticate : 1. To prove authentic; to determine as real and true; as, to authenticate a portrait.
2. To render authentic; to give authority to, by the proof, attestation, or formalities required by law, or sufficient to entitle to credit.

Synonyms:

vindicate, show, point to, evidence, vouch for, back, study atverify, justify, bear out, true, argue, assert, make/prove your/a point

approve, affirm, confirm, authorize, endorse, consent, underwrite, permit, approbate, assent, ratify, validate, accept, certify, sanction

corroborate, witness, adduce, betoken, support, establish, exhibit, demonstrate, prove, determine, state, connote, evince, declare, attest, illustrate, exemplify, manifest, observe, substantiate, indicate, depose, testify, avouch, document, vouch

verify

countersign, bless, empower, deputize, enfranchise, enable, ordain, entitle, commission, denominate, license, warrant, agree, designate, notarize

Usage examples:

• Neither the author nor I can with certainty authenticate the information we communicate to the public, nor in an affair of eternal fluctuation arrive at perfect exactness. - "The Works of the Right Honourable Edmund Burke, Vol. I. (of 12)", Edmund Burke.
• I wish we could authenticate that! - "Denzil Quarrier", George Gissing.
• It shall be his duty then to edit the laws, arrange them for publication, and to authenticate by his signature the volumes of the annual laws. - "Popular Law-making", Frederic Jesup Stimson.