confirm

confirm [-ed, -s] v

ME conferme-n < L. confirmāre, make firm, strengthen, establish.

1. Establish; fix firmly; make sure.
2. Appoint; assign; establish; call; set apart; give full blessings; provide with unlimited privileges, powers, and opportunities; [fig.] accept into a congregation; identify as a member of a religious group.
3. Verify; provide certainty; give new assurance of truth.