Answer: confirmation

AnswerCrossword Clue
CONFIRMATIONValidation
confirmationthe act of confirming
confirmation(in the Christian Church) The rite at which a baptized person, esp. one baptized as an infant, affirms Christian belief and is admitted as a full member of the church
confirmationThe action of confirming something or the state of being confirmed
confirmationThe Jewish ceremony of bar mitzvah or bat mitzvah