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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
who's
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "who's" is correct and usable in written English.
It is a contraction of "who is" or "who has" and can be used in various contexts to refer to a person or people. Example: "Who's coming to the party tonight?"
✓ Grammatically correct
News & Media
Science
Alternative expressions(5)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Who's rich, who's not?
News & Media
Who's happy, who's depressed?
News & Media
Who's up, who's down?
News & Media
Who's right and who's wrong?
Science & Research
Who's in, who's out?
News & Media
"Who's this?
News & Media
Who's ready?
News & Media
Who's that?
News & Media
Who's dead?
News & Media
Who's not?
News & Media
Who's down?
News & Media
Expert writing Tips
Best practice
Use "who's" when you want to combine "who is" or "who has" for brevity and a more conversational tone. Ensure the context clearly indicates which meaning you intend.
Common error
Avoid using "who's" when you need the possessive form. "Who's" means "who is" or "who has", while "whose" indicates ownership. For example, use "whose book is this?" not "who's book is this?".
Source & Trust
89%
Authority and reliability
4.8/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "who's" is to act as a contraction serving as a pronoun and verb. It is used to inquire about the identity of a person or to indicate possession or completion, as confirmed by Ludwig's examples.
Frequent in
News & Media
70%
Science
15%
Formal & Business
5%
Less common in
Academia
3%
Encyclopedias
2%
Wiki
1%
Ludwig's WRAP-UP
In summary, "who's" is a common contraction that combines "who is" or "who has". It is crucial to differentiate it from "whose", which indicates possession. Ludwig AI confirms that "who's" is grammatically correct and widely accepted in various contexts, especially in news and media. When writing, always consider whether you mean "who is/has" or the possessive "whose" to avoid errors. Use "who is" or "who has" for greater clarity in formal contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
who is
Expands the contraction "who's" to its full form.
who has
Another expansion of the contraction "who's" to its full form, indicating possession or completion of an action.
who is it
Emphasizes the identity of the person in question.
who's the one
Highlights a specific individual among a group.
who could it be
Expresses uncertainty or speculation about someone's identity.
which person is
A more formal way of asking for someone's identity.
the person who is
Identifies someone by describing their state or role.
the individual who has
A formal alternative using "individual" instead of "person".
who might that be
Expresses curiosity and uncertainty.
can you tell me who is
A polite way of requesting information about someone's identity.
FAQs
How to use "who's" in a sentence?
"Who's" can be used to combine "who is" or "who has" in a sentence. For example, "Who's going to the store?" or "Who's been eating my cookies?".
What's the difference between "who's" and "whose"?
"Who's" is a contraction of "who is" or "who has", while "whose" indicates possession. For example, "whose car is this"? (possession) versus "who is coming"? ("who's" coming?).
What can I say instead of "who's"?
Is it ever incorrect to use "who's"?
Yes, it's incorrect to use "who's" when you mean "whose", the possessive form. For example, it is wrong to write "who's book is this?" when you should write "whose book is this"?
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.8/5
Expert rating
Real-world application tested