CONFIRM

transitive verb Etymology: Middle English, from Anglo-French cunfermer, from Latin ~are, from com- + firmare to make firm, from firmus firm Date: 13th century to give approval to ; ratify , to make firm or firmer ; strengthen , to administer the rite of ~ation to, to give new assurance of the validity of ; remove doubt about by authoritative act or indisputable fact , ~ability noun ~able adjective Synonyms: see: ~