| John Hancock Thesaurus Entries OK, X, acceptance, affirmance, affirmation, approbation, approval, authentication, authorization, autograph, certification, christcross, cipher, confirmation, countermark, countersign, countersignature, counterstamp, cross, device, endorsement, go-ahead, green light, hand, imprimatur, initials, mark, mark of signature, monogram, nod, notarization, okay, permission, ratification, rubber stamp, sanction, seal, sigil, sign manual, signature, signet, stamp, stamp of approval, subscription, the nod, validation, visa, vise, warrant | ![]() |