ratify

transitive verb | \ ˈra-tə-ˌfī \ | rat·i·fy
  1. : to make valid or effective; especially : to adopt or affirm (as the prior act or contract of an agent) by express or implied consent with the effect of original authorization unable to rescind the contract because he ratified it by accepting the benefits — compare reform : to adopt or affirm (as the prior act or contract of an agent) by express or implied consent with the effect of original authorization unable to rescind the contract because he ratified it by accepting the benefits — compare reform