a person who practices or favors polygyny.
Origin of polygynist
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for polygynist
Historical Examples of polygynist
It may now be asked why the polygynist nations have not gravitated to monogamy, like the latter-day saints of Salt Lake City.Getting Married
George Bernard Shaw