who's who

noun, often capitalized both Ws
\ ˌhüz-ˈhü \

Definition of 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

But there are many people in Mexico who are who are deeply worried about an Andres Manuel presidency. William La Jeunesse, Fox News, "Mexican presidential elections could deteriorate foreign relations with US," 30 June 2018 Swoveland explained who was who in the mural in that Outsmart piece. Craig Hlavaty, Houston Chronicle, "Memories of murals outside departed Montrose gay bar Mary's still live on," 22 June 2018 From Alice Paul and her fellow suffragettes to Gloria Steinem and Shirley Chisholm, the list can read like a who's who of feminism. Abby Gardner, Glamour, "The ERA Is Back in the News—This Is Why You Should Be Paying Attention," 12 June 2018 Even those who recall the times, or know the history well, must pay rapt attention to keep up with who's who onstage. Theodore P. Mahne, NOLA.com, "'All the Way' a brilliant political drama from Southern Rep," 29 May 2018 Willoughby Brewing marks 20 years Brewers who are scheduled to come back to Willoughby this week cover a who's who of Northeast Ohio suds royalty, including Chris Alltmont, now at Fat Head's Brewery. Marc Bona, cleveland.com, "Willoughby Brewing Co. marks 20 years with specials and a lot of history," 19 Feb. 2018 His filmography is a who's who of ridiculous movies that are somehow at once artful and completely tasteless (his previous film, Love, was released in 3D and features a real handjob as its opening scene). Tom Philip, GQ, "Provocative Movie Director Gaspar Noé Has Finally Gone Too Far," 18 May 2018 The array of female speakers reads like a who's who of political and cultural relevancy: Cynthia Nixon, actress, activist, LGBT figure and New York gubernatorial candidate, spoke at Helene Fuld College of Nursing earlier this month. Aj Willingham, CNN, "In a tumultuous and triumphant year, women are dominating as college commencement speakers," 10 May 2018 The list of performers reads like a who's who of rock n' roll, some at the beginning of their careers. Dawn Mitchell, Indianapolis Star, "Whatever happened to: Sherwood Country Club," 1 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'who's who.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of who's who

1917, in the meaning defined at sense 1

Keep scrolling for more

Learn More about who's who

Dictionary Entries near who's who

WHO

who'd

who's counting?

who's who

whoa

who asked you?

who can tell

Statistics for who's who

Last Updated

31 Jul 2018

Look-up Popularity

Time Traveler for who's who

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

See more words from the same year

More from Merriam-Webster on who's who

See words that rhyme with who's who

Britannica.com: Encyclopedia article about who's who

Comments on who's who

What made you want to look up who's who? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to deposit or conceal in a hiding place

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!