Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
what they are
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "what they are" is correct and usable in written English.
It can be used to refer to the identity or nature of something or someone in a descriptive context. Example: "The students were curious about the different species of birds, so the teacher explained what they are."
✓ Grammatically correct
News & Media
Academia
Wiki
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
Tells what they are.
News & Media
That's what they are.
News & Media
"What they are is flexible".
News & Media
What they are not: subtle.
News & Media
I know what they are.
News & Media
That changes what they are.
News & Media
They are what they are!
News & Media
Guess what they are called?
News & Media
That's what they are saying.
News & Media
what they are told.
News & Media
Humans know what they are.
Expert writing Tips
Best practice
Use "what they are" when you need to clearly define or explain the nature, identity, or state of multiple subjects.
Common error
Avoid using "what they is" instead of "what they are". The verb must agree with the plural subject "they".
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what they are" functions as a relative clause or a noun clause, often serving as the object of a verb or preposition. It introduces information about the identity, nature, or state of the subjects referred to by "they". As Ludwig AI states, this phrase is usable in written English.
Frequent in
News & Media
60%
Academia
20%
Wiki
10%
Less common in
Science
5%
Formal & Business
3%
Reference
2%
Ludwig's WRAP-UP
In summary, "what they are" is a versatile phrase used to define, describe, or explain the nature or identity of multiple subjects. According to Ludwig AI, it is considered grammatically correct and widely applicable, as indicated by its frequent usage in news media, academic texts, and wikis. While maintaining a generally neutral tone, the phrase benefits from understanding its context to ensure accurate subject-verb agreement and prevent misinterpretations. Considering alternatives such as "their true nature" can enrich writing by providing nuanced expression.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
their true nature
Focuses on the essential qualities or characteristics.
their actual state
Emphasizes the current condition or situation.
their identity
Highlights the specific characteristics that define them.
what defines them
Shifts the focus to the defining aspects or attributes.
the reality of their existence
Adds a philosophical tone emphasizing their being.
the truth about them
Highlights a revelation or uncovering of facts.
the sum of their parts
Focuses on the individual components that constitute the whole.
their composition
Emphasizes the elements or ingredients that make them up.
their essence
Highlights the intrinsic and indispensable quality.
their inherent qualities
Focuses on the qualities that are naturally part of them.
FAQs
How can I use "what they are" in a sentence?
Use "what they are" to define or describe the characteristics of multiple subjects. For example, "The students learned what the different types of cells "what they are" during the biology lesson."
What is a formal alternative to "what they are"?
In formal contexts, consider using phrases like "their true nature" or "their defining characteristics" to replace "what they are", depending on the specific meaning you intend to convey. For example, instead of saying "The report details "what they are"", you could say "The report details their defining characteristics".
Is it grammatically correct to say "what they is" instead of "what they are"?
No, "what they is" is grammatically incorrect. The correct phrase is ""what they are"", as the verb must agree with the plural subject "they".
What's the difference between "what they are" and "what it is"?
"What they are" refers to multiple subjects, while "what it is" refers to a single subject. For example, "I understand what it is" (singular) versus "I understand "what they are"" (plural).
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested