S.D. Codified Laws § 22-16-31 (2026)
Homicide is excusable if committed by accident and misfortune in the heat of passion, upon sudden and sufficient provocation, or upon a sudden combat. However, to be excusable, no undue advantage may be taken nor any dangerous weapon used and the killing may not be done in a cruel or unusual manner.
Source: SDC 1939, § 13.2002 (2); SL 2005, ch 120 , § 162.