Synonyms and related words :
John Hancock, OK, X, acceptance, affidavit, affirmance, affirmation, approbation, approval, attestation, authentication, authority, authorization, autograph, bill of health, certificate, certificate of proficiency, certification, christcross, cipher, clearance, confirmation, countermark, countersign, countersignature, counterstamp, credential, cross, deposition, device, diploma, endorsement, full pratique, go-ahead, green light, hand, imprimatur, initials, mark, mark of signature, monogram, navicert, nod, notarization, notarized statement, note, okay, pass, passport, permission, pratique, protection, ratification, rubber stamp, safe-conduct, safeguard, sanction, seal, sheepskin, sigil, sign manual, signature, signet, stamp, stamp of approval, subscription, sworn statement, testamur, testimonial, the nod, ticket, validation, vise, voucher, warrant, warranty, witness