John Hancock, OK, accept, acceptance, accredit, affirm, affirmance, affirmation, amen, approbation, approval, approve, authenticate, authentication, authorization, authorize, autograph, certification, certify, confirm, confirmation, cosign, countersign, countersignature, endorse, endorsement, give permission, give the go-ahead, give the imprimatur, give thumbs up, go-ahead, green light, imprimatur, initial, nod, notarization, notarize, okay, pass, pass on, pass upon, permission, permit, ratification, ratify, sanction, say amen to, seal, second, sigil, sign, sign and seal, signature, signet, stamp, stamp of approval, subscribe to, subscription, support, swear and affirm, swear to, the nod, undersign, underwrite, validate, validation, visa, vise, warrant

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