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
define with
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase “define with” is not a valid part of a sentence in English.
Instead, you could use a phrase like “defined by” or “defined as”. For example, you could say, “The word ‘success’ is defined as achieving a goal or a desired outcome.”.
⚠ May contain grammatical issues
News & Media
Academia
Science
Alternative expressions(20)
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
Gender itself is difficult to define, with a mix of social, medical and individual interpretations.
News & Media
Rule 404 employs terms that are difficult to define with precision.
News & Media
As Alter told me, "I didn't define with her what 'a few' meant".
News & Media
I think you can communicate larger issues in a concert than you can define with words".
News & Media
It is not a success that one can define with a simple formula.
News & Media
What that power is, it is difficult to define with sharp precision.
Academia
"I want to define with Algeria a strategic partnership on an equal-to-equal basis.
News & Media
The several councils mentioned in Talmudic literature are equally difficult to define with any precision.
Encyclopedias
"He has symptoms, and really, they're hard to define with him," said Glen Sather, the Rangers' president and general manager.
News & Media
To his credit, he circles his subject in eloquent detail without ever attempting to define with any finality what lies at the heart of Morrison's songwriting.
News & Media
If the objective is too unclear to define with respect to the data, try to create intermediate results to help your teams be more effective.
News & Media
Expert writing Tips
Best practice
When aiming for clarity, substitute "define with" with more precise alternatives such as "define using", "define in terms of", or "define by means of" to enhance grammatical accuracy and avoid ambiguity.
Common error
Avoid using "define with" in academic or professional contexts. Often, it is more grammatically sound and clearer to use phrases like "defined by" or "defined as" for better precision.
Source & Trust
84%
Authority and reliability
3.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "define with" is used to describe the act of defining something in conjunction with another element. However, its grammatical correctness is questionable, as noted by Ludwig, which suggests it's not a standard English construction. Examples from Ludwig suggest a variety of contexts, often where more precise language might be preferred.
Frequent in
Science
30%
News & Media
25%
Academia
20%
Less common in
Formal & Business
10%
Encyclopedias
8%
Wiki
7%
Ludwig's WRAP-UP
In summary, while the phrase "define with" appears frequently across various sources, Ludwig AI indicates that it's generally considered grammatically incorrect. The phrase aims to link the act of defining to a specific method or context. However, it's advisable to replace it with more precise and grammatically sound alternatives like "define using", "define in terms of", or "define by", especially in formal writing. Despite its common usage, opting for grammatically correct alternatives will enhance clarity and precision in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
define using
This alternative focuses on the method or instrument employed in the definition.
define by means of
This alternative emphasizes the tool or process through which something is defined.
define in relation to
This emphasizes the definition as it is affected by its connection with something else
define in terms of
This alternative emphasizes using specific conditions or aspects to explain or make clear the definition of a concept
establish with
This alternative indicates the starting or creation of something in conjunction with something else, differing subtly from a strict definition.
specify by
This focuses on providing detailed and exact information for a definition or description
characterize with
This option centers on describing key attributes, offering a descriptive rather than definitive approach.
determine with
This alternative relates to discovering or establishing something alongside another element.
elucidate through
This alternative emphasizes the idea of making something more clear, offering a detailed approach.
stipulate with
This alternative relates to explicitly demanding or specifying a condition as part of an agreement
FAQs
What can I say instead of "define with"?
You can use alternatives like "define using", "define in terms of", or "define by means of" depending on the context.
Is "define with" grammatically correct?
While "define with" appears in numerous sources, it is generally considered grammatically incorrect. It is better to use alternatives like "defined by" or "defined as".
How can I use "define with" correctly in a sentence?
It's generally advised to avoid "define with" in formal writing. If you intend to express the tool or method of definition, use "define using" or "define by means of".
What's the difference between "define with" and "defined by"?
"Define with" is generally considered grammatically incorrect. "Defined by" indicates that something is explained or characterized by something else, making it a more accurate and standard phrasing.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
3.5/5
Expert rating
Real-world application tested