• The defendant bears the burden of proving an affirmative defense. Examples of affirmative defenses are duress (in a civil case) and insanity and self-defense (in a criminal case).
— Also termed plea in avoidance; plea in justification. Cf. negative defense. [Cases: Criminal Law 31; Federal Civil Procedure 751; Pleading 78. C.J.S. Criminal Law §§ 15, 46–49, 88, 93–94; Pleading §§ 160–161.]