Synonyms and related words :
John Hancock, OK, X, acceptance, affirmance, affirmation, approbation, approval, authentication, authorization, autograph, billhead, book stamp, bookplate, boss, brand, broad arrow, bump, cachet, cap of dignity, cap of maintenance, certification, check, christcross, cipher, colophon, concavity, confirmation, convexity, coronet, counterfoil, countermark, countersign, countersignature, counterstamp, cross, crown, dactylogram, dactylograph, dent, device, diadem, dint, docket, embossment, endorsement, ermine, excrescence, fingerprint, footmark, footprint, footstep, fossil footprint, go-ahead, government mark, government stamp, great seal, green light, hallmark, hand, ichnite, ichnolite, impress, impression, imprimatur, imprint, indent, indentation, indention, initials, label, letterhead, logo, logotype, lump, mark, mark of signature, masthead, monogram, nod, notarization, okay, orb, pad, paw print, pawmark, permission, pimple, plate, price tag, print, privy seal, pug, pugmark, purple, purple pall, ratification, regalia, registered trademark, robe of state, rod, rod of empire, royal crown, rubber stamp, running head, running title, sanction, scepter, seal, sigil, sign manual, signature, stamp, stamp of approval, step, sticker, stub, stud, subscription, tag, tally, the nod, thumbmark, thumbprint, tiara, ticket, title page, token, trade name, trademark, trademark name, triple plume, uraeus, validation, vestige, visa, vise, warrant