Polygamist (noun)

A person who practices polygamy, which is the state or practice of having more than one spouse at one time.

Origin:

Late 19th century: from greek polugamos "married to many", from polus "many" + gamos "marriage".

Examples:

1. The polygamist had three wives and several children.
2. The community was led by a polygamist who had multiple wives.
3. Polygamist marriages are illegal in many countries including the United States.
4. The polygamist was arrested for marrying multiple women without legal permission.
5. The polygamist believed that having multiple wives was part of his religious beliefs.