ratify

v. (-ies, -ied) confirm or accept (an agreement made in one's name) by formal consent, signature, etc.  ratification n. [medieval latin: related to *rate1]

n. To approve and sanction; to make valid; to confirm; to establish; to settle; especially, to give sanction to, as something done by an agent or servant; as, to ratify an agreement, treaty, or contract; to ratify a nomination.