Synonyms for confirmation

noun

• making something valid by formally ratifying or confirming it
• additional proof that something that was believed (some fact or hypothesis or theory) is correct
• a ceremony held in the synagogue (usually at Pentecost) to admit as adult members of the Jewish community young men and women who have successfully completed a course of study in Judaism
• a sacrament admitting a baptized person to full participation in the church
• information that confirms or verifies