big sister

noun

1
: an older sister
2
: a woman who serves as a companion, mother figure, and role model for a girl

Examples of big sister in a Sentence

Recent Examples on the Web
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Now Sky Roberts is trying his best to stand up for his big sister. Laura Trujillo, USA Today, 21 Feb. 2026 Like her big sister Billie, 14-year-old Georgia has seen her father’s famous role on Grey’s Anatomy—leading to a humorous exchange. Bailey Bujnosek, InStyle, 20 Feb. 2026 Hilary Duff tearfully confirmed the has been long estranged from big sister Haylie ahead of the Disney Channel alum’s new album and world tour. Jami Ganz, New York Daily News, 20 Feb. 2026 Cameron [Diaz] is like your can-do big sister. Rachel Chang, Travel + Leisure, 19 Feb. 2026 See All Example Sentences for big sister

Word History

First Known Use

1828, in the meaning defined at sense 1

Time Traveler
The first known use of big sister was in 1828

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Cite this Entry

“Big sister.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/big%20sister. Accessed 24 Feb. 2026.

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