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
was not defined
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "was not defined" is correct and usable in written English.
It can be used when discussing something that lacks a clear or established definition, often in academic or technical contexts. Example: "In the study, the term 'sustainability' was not defined, leading to confusion among the participants."
✓ Grammatically correct
Science
News & Media
Encyclopedias
Alternative expressions(20)
was not characterised
was not designated
was not deemed
was not identified
was not specified
was not accommodated
was not categorized
was not deemed sufficient
was considered inadequate
was not characterized
was not outlined
was not demonstrated
was not declared
was not contemplated
was not examined
was not suggested
was not recommended
was judged inappropriate
was not considered
was not determined
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
57 human-written examples
The sample size was not defined on the basis of a pre-defined hypothesis testing.
Science
But the term "residents" was not defined.
News & Media
What this meant was not defined.
News & Media
The exact nature of that executive action was not defined.
News & Media
But Ms. Wang said she was not defined by wealth — either her own or her parents'.
News & Media
She was all of these, but she was not defined by any one of them.
News & Media
Mitt Romney said, "He was not defined, in his own mind, by winning elections.
News & Media
How quickly any of that will actually take effect was not defined.
News & Media
Because we did not specifically address what constitutes retaliation, however, the precise scope of that term was not defined.
Academia
Then one day, it hit him: his self-worth was not defined by what he could accomplish in gymnastics.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Exactly how much some might be was not defined.
News & Media
Expert writing Tips
Best practice
When using "was not defined", ensure the context makes it clear who or what had the responsibility to define it. This provides clarity and avoids ambiguity.
Common error
Avoid assuming the reader knows what should have been defined. Explicitly state why the lack of definition is significant or causes problems in understanding.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was not defined" functions as a passive construction indicating the absence of a definition for a particular term, concept, or entity. Ludwig examples illustrate its use across various academic and professional fields to highlight a lack of clarity or specification.
Frequent in
Science
51%
News & Media
39%
Encyclopedias
2%
Less common in
Wiki
3%
Academia
2%
Formal & Business
1%
Ludwig's WRAP-UP
In summary, the phrase "was not defined" is a common and grammatically sound expression used to indicate the absence of a clear definition for something. Ludwig confirms its wide applicability across various domains, especially science and news media. While versatile, clarity can be enhanced by specifying who or what was responsible for providing the definition. When writing, avoid assuming that readers automatically understand implicit terms, and emphasize the impact of the lack of definition. By understanding the nuances of "was not defined", writers can ensure greater precision and avoid potential misunderstandings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
was left undefined
This alternative places emphasis on the act of leaving something without a definition.
remained unspecified
Focuses on the lack of specific detailing.
was not specified
Highlights the absence of a clear specification.
was not clarified
Emphasizes the lack of clarification.
lacked a definition
Directly states the absence of a definition.
was not identified
Focuses on the failure to pinpoint or recognize something clearly.
was not delineated
Emphasizes the absence of clear boundaries or distinctions.
was not characterized
Highlights the lack of description of key characteristics.
was not detailed
Focuses on the omission of finer details.
was vaguely described
Indicates the description was unclear or imprecise.
FAQs
How can I use "was not defined" in a sentence?
Use "was not defined" to indicate that a term, concept, or procedure lacked a clear or established explanation. For example: "The scope of the project "was not defined", leading to scope creep."
What are some alternatives to "was not defined"?
Alternatives include "was left undefined", "remained unspecified", or "was not specified". The choice depends on the specific nuance you wish to convey.
Is it better to say "was not defined" or "was undefined"?
Both are grammatically correct, but "was not defined" is generally preferred in formal writing as it is more explicit and avoids potential ambiguity. "Was undefined" is acceptable but can sometimes sound less precise.
Why is it important to define terms clearly?
Defining terms clearly prevents misunderstandings and ensures everyone shares a common understanding. When a key term "was not defined", it can lead to confusion, misinterpretation, and ultimately, flawed conclusions.
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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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested