brother-in-law
noun
broth·er-in-law
ˈbrə-t͟hər-ən-ˌlȯ 
ˈbrət͟h-rən-,
ˈbrə-t͟hərn-
plural brothers-in-law
ˈbrə-t͟hərz-ən-
1
: the brother of one's spouse
2
a
: the husband of one's sibling
b
: the husband of one's spouse's sibling
Examples of brother-in-law in a Sentence
Recent Examples on the Web
Take, for example, a recent one-day hike in the Catskills with my brother-in-law, our first such outing.
—
Tom Vanderbilt, Outside, 29 Dec. 2025
With help from his brother-in-law, Sanchez’s dad tore out the closet in his bedroom at his parents' house, transforming the room into a dollhouse.
—Jordan Greene, PEOPLE, 25 Dec. 2025
José González Valencia, a brother-in-law of El Mencho, was sentenced in June to 30 years in a prison after pleading guilty to a drug trafficking conspiracy charge.
—CBS News, 19 Dec. 2025
Later Cobb and his brother-in-law, Jack Lyon, bought out the others and turned the Idaho Statesman into a major newspaper.
—Idaho Statesman, 16 Dec. 2025
See All Example Sentences for brother-in-law
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Tom Vanderbilt, Outside, 29 Dec. 2025
With help from his brother-in-law, Sanchez’s dad tore out the closet in his bedroom at his parents' house, transforming the room into a dollhouse.
—Jordan Greene, PEOPLE, 25 Dec. 2025
José González Valencia, a brother-in-law of El Mencho, was sentenced in June to 30 years in a prison after pleading guilty to a drug trafficking conspiracy charge.
—CBS News, 19 Dec. 2025
Later Cobb and his brother-in-law, Jack Lyon, bought out the others and turned the Idaho Statesman into a major newspaper.
—Idaho Statesman, 16 Dec. 2025
See All Example Sentences for brother-in-law
Cite this Entry
“Brother-in-law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brother-in-law. Accessed 2 Jan. 2026.
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