who's who

noun

variants often Who's Who
Synonyms of who's whonext
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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Since the podcast's premiere, Obama and Robinson have interviewed a who's who of Hollywood A-listers, including Bruce Springsteen, Dwyane Wade and Gabrielle Union, Kenan Thompson, Carol Burnett and Jimmy Kimmel. Edward Segarra, USA Today, 2 June 2026 Filmmakers like Jean Cocteau and performers like Josephine Baker—the entire who's who of the time—came through Juan-les-Pins. Lane Nieset, Travel + Leisure, 18 May 2026 The group's members are a who's who of now iconic names, including the RZA, the GZA, Ol' Dirty Bastard, Method Man, Ghostface Killah, Raekwon the Chief, Masta Killa, U-God and Inspectah Deck. Jesse Zanger, CBS News, 14 Apr. 2026 The reception was packed with a who's who and just as the doors opened, the crowd divided like the Red Sea. Arkansas Online, 15 Feb. 2026 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 12 Jun. 2026.

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