who's who

noun

often capitalized both Ws
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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Happy also teams up with the who's who of the PGA Tour – including Scottie Scheffler, Rory McIlroy and Collin Morikawa – to save traditional golf when an energy drink mogul (Benny Safdie) tries to popularize a more extreme version of the sport. Kimi Robinson, USA Today, 31 July 2025 The audience itself was a who's who of the business world, with former Starbucks CEO Howard Schultz spotted among the attendees. Christer Holloman, Forbes.com, 16 July 2025 Black Sabbath and Osbourne are the headliners on a day of music featuring a who's who in hard rock. Mike Snider, USA Today, 4 July 2025 Martin is palpably excited when discussing the album with Brown, alongside not just O'Brien but also a who's who of rock and roots music including Jackson Browne, Sierra Hull and Aoife O'Donovan. Marcus K. Dowling, The Tennessean, 2 July 2025 See All Example Sentences for who's who

Word History

First Known Use

1917, in the meaning defined at sense 1

Time Traveler
The first known use of who's who was in 1917

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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 6 Aug. 2025.

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