sister-in-law

noun

sis·​ter-in-law ˈsi-st(ə-)rən-ˌlȯ How to pronounce sister-in-law (audio)
-tərn-ˌlȯ
plural sisters-in-law ˈsi-stər-zən-ˌlȯ How to pronounce sister-in-law (audio)
1
: the sister of one's spouse
2
a
: the wife of one's sibling
b
: the wife of one's spouse's sibling

Examples of sister-in-law in a Sentence

Recent Examples on the Web
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The Chiefs are in pursuit of a third straight Super Bowl title and there’s little doubt that Mahomes will be there, along with his sister-in-law, to support the quarterback and the team. Ryan Gaydos, Fox News, 17 Jan. 2025 Matt Seidler disputed several of his sister-in-law’s allegations in a public letter after the lawsuit was filed. Dennis Lin, The Athletic, 16 Jan. 2025 Wedding Etiquette: 7 Dos And Don'ts For Guests By Darlin Tillery Life & Trends Reporter 0 A bride's refusal to change her wedding menu despite the demands of her newly vegan sister-in-law has been applauded by netizens. Michael Gfoeller and David H. Rundell, Newsweek, 16 Jan. 2025 Matt dove deeply into the agriculture industry and has worked alongside his brother and sister-in-law ever since. Dory Jackson, People.com, 16 Jan. 2025 See all Example Sentences for sister-in-law 

Word History

First Known Use

15th century, in the meaning defined at sense 1

Time Traveler
The first known use of sister-in-law was in the 15th century

Dictionary Entries Near sister-in-law

Cite this Entry

“Sister-in-law.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sister-in-law. Accessed 23 Jan. 2025.

Kids Definition

sister-in-law

noun
sis·​ter-in-law
ˈsis-t(ə-)rən-ˌlȯ,
-tərn-ˌlȯ
plural sisters-in-law
-tər-zən-
1
: the sister of one's spouse
2
a
: the wife of one's sibling
b
: the wife of one's spouse's sibling

More from Merriam-Webster on sister-in-law

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