monogamous

adjective

mo·​nog·​a·​mous mə-ˈnä-gə-məs How to pronounce monogamous (audio)
variants or less commonly monogamic
: 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
monogamously adverb
Pairs usually mate monogamously for life … Vincenzo Penteriani et al.

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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.

Examples of monogamous in a Sentence

Recent Examples on the Web
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They are known for forming strong monogamous bonds, and when a mate dies, the surviving swan may go through a period of mourning, often showing signs of distress and isolation. Raja Krishnamoorthi, Newsweek, 13 Mar. 2025 Changes in pair bond maintenance across pregnancy and infant rearing in a monogamous primate (Plecturocebus cupreus) Cornell Lab. Bald Eagle National Library of Medicine. Cody Cottier, Discover Magazine, 28 Jan. 2025 Come for adventure, danger, monogamous penguin love, and those super-cute chicks. Alison Willmore, Vulture, 8 Jan. 2025 There's so much involved in a monogamous relationship. Christian John Wikane, People.com, 23 Feb. 2025 See All Example Sentences for monogamous

Word History

First Known Use

1770, in the meaning defined above

Time Traveler
The first known use of monogamous was in 1770

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Cite this Entry

“Monogamous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/monogamous. Accessed 16 Mar. 2025.

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