(n.) The act of ratifying; the state of being ratified; confirmation; sanction; as, the ratification of a treaty.

John Hancock OK acceptance accord acquiescence affirmance affirmation affirmative affirmative voice agreement approbation approval assent attestation authentication authority authorization aye backing backing up bearing out blessing bolstering buttressing certification circumstantiation clearance compliance confirmation connivance consent corroboration corroboratory evidence countenance countersignature documentation eagerness empowerment enabling endorsement enfranchisement entitlement fiat fortification go-ahead green light imprimatur nod notarization okay permission promptitude promptness proof proving proving out readiness reinforcement rubber stamp sanction seal sigil signature signet stamp stamp of approval strengthening submission subscription substantiation support supporting evidence the nod undergirding ungrudgingness unloathness unreluctance validation verification visa vise warrant warranty willingness