OK, accede to, accept, accord to, accredit, adopt, affiliate, affirm, agree to, amen, approve, approve of, assent, attest, authenticate, authorize, autograph, back, back up, be willing, bear out, bolster, buttress, carry, certificate, certify, charter, circumstantiate, clinch, commission, condescend, confirm, connive at, consent, consent to silently, corroborate, cosign, countersign, deign, document, embrace, empower, enable, endorse, enfranchise, ensure, entitle, espouse, establish, fortify, franchise, give consent, give official sanction, give permission, give power, give the go-ahead, give the imprimatur, give thumbs up, go along with, go in for, grant, guarantee, have no objection, hold with, initial, legalize, legitimize, license, nod, nod assent, not refuse, notarize, okay, pass, pass on, pass upon, patent, permit, privilege, probate, prove, reinforce, rubber stamp, sanction, say amen to, say aye, say yes, seal, second, settle, sign, sign and seal, strengthen, subscribe to, substantiate, support, sustain, swear and affirm, swear to, take kindly to, take up, undergird, undersign, underwrite, uphold, validate, verify, visa, vise, vote affirmatively, vote aye, warrant, wink at, yield assent