: relating to, characterized by, or practicing monogamy: having only one mate, spouse, or sexual partner at one time
… the beaver has several qualities that endear it to people: it is monogamous and lives in a family unit; it is gentle and clean; it is absolutely industrious. Doug Hand
But for women who are not at risk for STDs because they are in mutually monogamous relationships, modern IUDs can be safe and very effective. Kim Painter
There are many kinds of infidelity, but here we are talking about a sexual infidelity in monogamous marriage or a relationship that is tantamount to marriage. Frank Pittman
monogamouslyadverb
Pairs usually mate monogamously for life … Vincenzo Penteriani et al.
Did you know?
What is the Difference Between monogamous and Polygamous?
American marriage is by law monogamous; people are permitted to have only one spouse at a time. There are cultures with laws that permit marriage to more than one person at a time, or polygamy. Although the term polygamy may refer to polyandry (marriage to more than one man), it is more often used as a synonym for polygyny (marriage to more than one woman), which appears to have once been common in most of the world and is still found widely in some cultures.