mother-in-law

noun

moth·​er-in-law ˈmə-t͟hər-ən-ˌlȯ How to pronounce mother-in-law (audio)
ˈmət͟h-rən-,
ˈmə-t͟hərn-
plural mothers-in-law ˈmə-t͟hər-zən-ˌlȯ How to pronounce mother-in-law (audio)
1
: the mother of one's spouse
2
archaic : stepmother

Examples of mother-in-law in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
That's the other thing fueling Janae's desire for matzo ball redemption: her mother-in-law. Bon Appétit, Bon Appetit Magazine, 10 Apr. 2025 But that order failed to stop Reyes from attacking his wife and mother-in-law again, prosecutors say. John Annese, New York Daily News, 8 Apr. 2025 At one point last week, U.S. Commerce Secretary Howard Lutnick suggested that his 94-year-old mother-in-law wouldn't complain about missing a Social Security check for a month or so. Susan Tompor, USA Today, 8 Apr. 2025 As the family reminisced about her husband’s teenage years, her mother-in-law made a comment that left the mom furious. Ashley Vega, People.com, 4 Apr. 2025 See All Example Sentences for mother-in-law

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of mother-in-law was in the 14th century

Cite this Entry

“Mother-in-law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/mother-in-law. Accessed 22 Apr. 2025.

Kids Definition

mother-in-law

noun
moth·​er-in-law
ˈmət͟h-(ə-)rən-ˌlȯ,
ˈmət͟h-ərn-ˌlȯ
plural mothers-in-law
ˈmət͟h-ər-zən-
: the mother of one's husband or wife

More from Merriam-Webster on mother-in-law

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