Meaning & Definition
pronoun
Used to refer to a particular person or group previously mentioned.
She is the one who won the election.
Used to express a particular characteristic of a person or group.
He is someone who is always willing to help.
Used in questions to inquire about someone’s name.
Do you know who that lady is?
Used to ask about the identity of a person or people.
Who is coming to the party tonight?
Used to introduce a clause that provides more information about a person or people.
The teacher, who loves science, encouraged us to ask questions.
Etymology
Old English 'hwā', related to other Germanic languages.
Common Phrases and Expressions
who's who:
A term used to describe a situation in which the identity of people is made clear.
who cares:
An expression indicating indifference about a situation.
who done it:
A phrase referring to a mystery, often used in the context of detective stories.
Slang Meanings
Who's that?
When he saw the new person, he asked, 'Who's that?'
Who’s your daddy?
It's an informal way to boast about superiority or dominance.