1. To confirm (a judgment) on appeal. • Sometimes the verb is used without a direct object (we affirm). The equivalent expression in British English is to deny the appeal. [Cases: Appeal and Error 1124–1145. C.J.S. Appeal and Error §§ 714, 745, 770, 814, 826, 864–868, 878–898.]
2. To solemnly declare rather than swear under oath.
3. To testify or declare by affirmation.