Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “who”

See all translations

who

pronoun uk   /huː/ us  

who pronoun (QUESTIONS)

A1 used especially in questions as the subject or object of a verb, when asking which person or people, or when asking what someone's name is: Who did this? Who's she? Who are all those people? She asked me if I knew who had got the job. Who (also formal whom) do you want to talk to? I don't know who to ask to the party. used with verbs that relate to knowing, when you want to say that something is not known: "Are they going to get married?" "Who knows?" (= It is not possible to know at the moment.) Who can tell what will happen now?
More examples

who pronoun (USED TO REFER)

A2 used as the subject or object of a verb to show which person you are referring to, or to add information about a person just mentioned. It is used for people, not things: I think it was your Dad who phoned. She's one of those people who love to be the centre of attention. He called James, who was a good friend as well as the family doctor. The other people who (also that) live in the house are really friendly. This is Gabriel, who I told you about.
More examples
Grammar
Idioms
(Definition of who from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of who?
Add Cambridge dictionaries to your browser to your website

Definitions of “who” in other dictionaries

Word of the Day

shampoo

a liquid used for washing hair, or for washing particular objects or materials

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

crossfit noun

March 23, 2015
high-intensity strength training Two women in strappy dresses discussed how much weight they could snatch

Read More