Synonyms of 'certify'

accept, accredit, acknowledge, affirm, allege, Amen, approve, ascertain, assert, asseverate, assure, attest, authenticate, authorize, autograph, aver, avouch, avow, back, bear out, bolster, bond, book, buttress, certificate, charter, cinch, circumstantiate, classify, clinch, commission, confirm, corroborate, countersign, decide, declare, depone, depose, determine, disclose, document, empower, enable, endorse, enfranchise, entitle, establish, fix, fortify, franchise, guarantee, guaranty, initial, insure, legitimize, license, nail down, notarize, pass, patent, probate, profess, prove, ratify, reassure, reinforce, rubber stamp, sanction, seal, second, secure, settle, sort out, sponsor, strengthen, substantiate, support, swear, testify, verify, vouch, vouchsafe, vow, warrant, vise, visa, validate, uphold, underwrite, undergird, sustain, sign, privilege, permit, legalize, ensure, witness