Double Adultery Law and Legal Definition

Double adultery means unlawful intercourse between persons who are both married to other persons. In Hunter v. United States, 1 Pin. 91 (Wis. 1840, the court observed that “Adultery is the sin of incontinence between persons, one or both of whom are married. If both are married it is double adultery, or adultery on the part of both. If but one of them is married it is single adultery, and the married party alone is guilty of that offense; criminal intercourse between a married woman and an unmarried man is not adultery on the part of the man, but the woman is thereby guilty of that offense.”