Crossword clues for Sign off on 4 lettersAnswerClueSIGNSymptomSIGNMake it officialSIGNTalk with one's handsSIGNOne of 12 in the zodiacSIGNAgree formallySIGNMake an X, maybeSIGNBillboardSIGNDriving instructor?SIGNOne might say "stop"SIGNSet down your John HancockSIGNAffix one's John HancockSIGNOne of the Zodiac's 12SIGNHint of the futureSIGNVestigeSIGNProtester's placardSIGNAutographSIGNHoroscope headingSIGNMake official, as a checkSIGNLamppost attachmentSIGNWith 62-Down, some account verificationsSIGNCommunicate manuallySIGNPickup-line requestSIGNPortentSIGNSpeak with one's handsSIGNLet your fingers do the talkingSIGNAries or TaurusSIGNTalk silentlySIGNEndorse, in a waySIGNPut one's John Hancock onSIGNSee 10 AcrossSIGNUse ASLSIGNPut one's name down onSIGNSpeak manuallySIGNAquarius, e.g.SIGNAuthorizeSIGNFinalize a contractSIGNTalk digitallySIGNCommunicate digitallySIGNPut one's name onSIGNSandwich board, e.g.SIGNSpeak to the deafSIGNWrite one's name onSIGNOne might convince you to break a habitSIGNTalk to the deafSIGNEndorseSIGNMake one's markSIGNSymbol.SIGNUse AmeslanSIGNSagittarius or CapricornSIGNCommunicate with hand gestures