Polygyny Definition: One man with several wives. Related Terms: Marriage, Polygamy, Polyandry In Cleveland v United States, Justuice Douglas of the Supreme Court of United States wrote: "There are four fundamental forms of marriage: (1) monogamy; (2) polygyny, or one man with several wives; (3) polyandry, or one woman with several husbands; and (4) group marriage. "The term polygamy covers both polygyny and polyandry.... "We are dealing here with polygyny, one of the basic forms of marriage. Historically, its use has far exceeded that of any other form. It was quite common among ancient civilizations and was referred to many times by the writers of the Old Testament; even today it is to be found frequently among certain pagan and non-Christian peoples of the world. We must recognize, then, that polygyny, like other forms of marriage, is basically a cultural institution rooted deeply in the religious beliefs and social mores of those societies in which it appears. It is equally true that the beliefs and mores of the dominant culture of the contemporary world condemn the practice as immoral and substitute monogamy in its place. To those beliefs and mores I subscribe, but that does not alter the fact that polygyny is a form of marriage built upon a set of social and moral principles." REFERENCES: Cleveland v. United States, 329 US 14 (1946) Categories & Topics: Criminal Law Dictionary Family Law Dictionary Muslim Law Dictionary Find you are constantly looking up definitions? Try our search provider (works in most modern browsers) If you find an error or omission in Duhaime's Legal Dictionary, or if you have legal term suggestion, we'd love to hear from you!