S.D. Codified Laws § 25-4-5 (2026)
Willful desertion is the voluntary separation of one of the married parties from the other with intent to desert. The special conditions or circumstances set forth in §§ 25-4-8 to 25-4-14, inclusive, shall also apply in establishing desertion under the provisions of this title.
Source: SDC 1939, § 14.0709.