brother-in-law

noun

broth·​er-in-law ˈbrə-t͟hər-ən-ˌlȯ How to pronounce brother-in-law (audio)
ˈbrət͟h-rən-,
ˈbrə-t͟hərn-
plural brothers-in-law ˈbrə-t͟hərz-ən- How to pronounce brother-in-law (audio)
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
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.
In January, his former brother-in-law, Bollywood star Saif Ali Khan, was attacked and stabbed multiple times during a home invasion at his property in Mumbai, India. Meredith Kile, People.com, 13 June 2025 His brother-in-law Omri Miran is a hostage in Gaza. MSNBC Newsweek, 13 June 2025 My brother-in-law said that Abdullah, twenty-four, was gathering mint and zucchini in the back yard of their house when an Israeli quadcopter dropped a bomb and killed him. Mosab Abu Toha, New Yorker, 12 June 2025 Among them will be Moshe Emilio Lavi, whose brother-in-law, Omri Miran, 49, was kidnapped by Hamas on Oct. 7 and remains in captivity. John Bacon, USA Today, 9 June 2025 See All Example Sentences for brother-in-law

Word History

First Known Use

14th century, in the meaning defined at sense 1

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

Browse Nearby Words

Cite this Entry

“Brother-in-law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brother-in-law. Accessed 19 Jun. 2025.

Kids Definition

brother-in-law

noun
broth·​er-in-law
ˈbrət͟h-(ə-)rən-ˌlȯ,
ˈbrət͟h-ərn-ˌlȯ
plural brothers-in-law
ˈbrət͟h-ər-zən-
1
: the brother of one's spouse
2
: the husband of one's sibling or of one's spouse's sibling

More from Merriam-Webster on brother-in-law

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