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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 defines
Grammar usage guide and real-world examplesUSAGE SUMMARY
"what defines" is a correct and usable phrase in written English.
It is typically used as a question to ask for the specific qualities or characteristics that define something or someone. Example: What defines a successful leader? Is it their charisma, intelligence, or ability to inspire others?.
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(19)
what distinguishes
what determines
how would you describe
what sets apart
what is unique about
what is special about
what separates
is the difference between
what are the key differences between
what would define
what constitutes
what leads to
what results in
what is the cause of
what is responsible for
what explains
how can you characterize
what is your depiction of
what's your take on
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
What defines you?
News & Media
What defines economics?
News & Media
What defines a neighborhood?
News & Media
What defines a "language"?
News & Media
What defines community?
News & Media
So what defines gender?
News & Media
But what defines rich?
News & Media
Also, what defines success?
News & Media
That is what defines her.
News & Media
What defines an "establishment" Republican?
News & Media
That's what defines the Bronx.
News & Media
Expert writing Tips
Best practice
Use "what defines" when seeking a concise and comprehensive understanding of something's essential nature. For example, "What defines a great leader?"
Common error
Avoid using "what defines" when you only need a description of typical features. "What characterizes" may be more appropriate if you don't need a strict, essential definition.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "what defines" functions as an interrogative phrase used to solicit a definition or essential characteristics of a subject. It prompts a response that clarifies the fundamental nature or criteria that constitute a particular concept or entity, as evidenced by Ludwig's examples.
Frequent in
News & Media
50%
Science
25%
Encyclopedias
10%
Less common in
Formal & Business
5%
Wiki
5%
Reference
5%
Ludwig's WRAP-UP
The phrase "what defines" serves as a fundamental tool for inquiry, prompting a deeper understanding of the essential qualities that characterize a given subject. As Ludwig AI confirms, it is grammatically correct and commonly used. Predominantly found in news and media, scientific discussions, and encyclopedic entries, it seeks concise and comprehensive definitions. While "what defines" is often interchangeable with phrases like "what characterizes" or "what distinguishes", it's crucial to ensure that the context necessitates a strict definition rather than a mere description. Mastering the nuance of "what defines" enhances clarity and precision in communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
what characterizes
Focuses on the typical or distinctive features rather than a strict definition.
what distinguishes
Emphasizes the unique aspects that set something apart from others.
what differentiates
Highlights the differences between two or more things.
what identifies
Concentrates on the attributes that establish the identity of something.
what determines
Focuses on the factors that decide or control what something is.
what specifies
Emphasizes the details or conditions that define something.
what delineates
Highlights the boundaries or limits that define something.
what denotes
Focuses on what a term or symbol represents or signifies.
how would you describe
Asks for a descriptive account instead of a formal definition.
what are the key attributes of
Directs the response towards the essential qualities of something.
FAQs
How can I use "what defines" in a sentence?
Use "what defines" to ask about the essential characteristics or qualities of something. For example, "What defines a good friendship?" or "What defines success in this field?"
What can I say instead of "what defines"?
You can use alternatives like "what characterizes", "what distinguishes", or "what identifies" depending on the context.
Is it better to ask "what defines" or "how would you describe"?
"What defines" seeks a concise, essential definition. "How would you describe" asks for a more detailed, descriptive account. The best choice depends on the level of detail you need.
What's the difference between "what defines" and "what determines"?
"What defines" seeks the inherent qualities of something. "What determines" focuses on the factors that cause something to be a certain way. For example, "What defines a nation?" versus "What determines a nation's success?"
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested