Synonyms of 'certify'

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