Polygamous

[Couch Potatoe]

Of or pertaining to polygamy; characterized by, or
involving, polygamy; having a plurality of wives; as, polygamous
marriages; -- opposed to monogamous.

[Sonia]

[Polygamy] is a marriage or relationship which includes more than two partners. When a man is married to more than one wife at a time, the relationship is called [polygyny]; and when a woman is married to more than one husband at a time, it is called [polyandry]. If a marriage includes multiple husbands and wives, it can be called group or conjoint marriage. All parties involved in these type of relationships are polygamous

[Donald Trump]

Relating to or involving polygamy.

[Sarah]

married to more than one person at the same time, or relating to this practice:

[Gregory]

Practicing, relating to, or involving polygamy.