Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


who's who

Definition

the name and position of each person, especially in an organization
Who's Who
a book containing information about the world's richest or most famous people
The guest list reads like a Who's Who of top American businessmen.

(Definition of who's who from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

Word of the Day

tenterhooks

worried or nervous about something that is going to happen

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More