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who's who

noun

variants often Who's Who
1
: a compilation of brief biographical sketches of prominent persons in a particular field
a who's who of sports figures
2
: the leaders of a group : elite
3
: a listing or grouping of notable persons or things

Examples of who's who in a Sentence

Recent Examples on the Web
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Trump will host a dinner for the Saudi leader on Tuesday night with a who's who of guests. Mariam Khan, ABC News, 18 Nov. 2025 With recent firings in college football, a who's who of the biggest names in coaching have appeared in speculation for head coaching vacancies. Matthew Couden, MSNBC Newsweek, 20 Oct. 2025 Need a refresher on who's who at Sacred Heart? Mekishana Pierre, Entertainment Weekly, 3 Oct. 2025 The brief filed Thursday is a who's who of the country's top economic minds. Steve Kopack, NBC news, 25 Sep. 2025 See All Example Sentences for who's who

Word History

First Known Use

1860, in the meaning defined at sense 1

Time Traveler
The first known use of who's who was in 1860

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Cite this Entry

“Who's who.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/who%27s%20who. Accessed 30 Nov. 2025.

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