sister-in-law
noun
sis·ter-in-law
ˈsi-st(ə-)rən-ˌlȯ 
-tərn-ˌlȯ
plural sisters-in-law
ˈsi-stər-zən-ˌlȯ
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
Prosecutors in New Hampshire will tell a judge Friday that a teenager who admitted to killing his sister-in-law and her two sons in 2022 should spend nearly a century behind bars.
—
Michael Dorgan, FOXNews.com, 3 Oct. 2025
Sweeney’s brother and sister-in-law had taken him in as guardians.
—Amanda Castro, MSNBC Newsweek, 3 Oct. 2025
Chris Dreja, a musician, photographer and Rock and Roll Hall of Fame member who was a co-founder of the pioneering British rock band the Yardbirds and a co-writer of many of that band’s songs, has died, according to social media posts from his sister-in-law and his former bandmate Jimmy Page.
—Jem Aswad, Variety, 2 Oct. 2025
The Prince of Wales’ tribute follows his brother, Prince Harry, 41, and sister-in-law, Meghan Markle, 44, sharing their own moving words.
—Clare Fisher, PEOPLE, 2 Oct. 2025
See All Example Sentences for sister-in-law
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Michael Dorgan, FOXNews.com, 3 Oct. 2025
Sweeney’s brother and sister-in-law had taken him in as guardians.
—Amanda Castro, MSNBC Newsweek, 3 Oct. 2025
Chris Dreja, a musician, photographer and Rock and Roll Hall of Fame member who was a co-founder of the pioneering British rock band the Yardbirds and a co-writer of many of that band’s songs, has died, according to social media posts from his sister-in-law and his former bandmate Jimmy Page.
—Jem Aswad, Variety, 2 Oct. 2025
The Prince of Wales’ tribute follows his brother, Prince Harry, 41, and sister-in-law, Meghan Markle, 44, sharing their own moving words.
—Clare Fisher, PEOPLE, 2 Oct. 2025
See All Example Sentences for 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 8 Oct. 2025.
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