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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
not well-defined
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "not well-defined" is correct and usable in written English.
It can be used to describe a concept, term, or situation that lacks clarity or precision. Example: "The parameters of the project are not well-defined, making it difficult to establish a clear timeline."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
8 human-written examples
First, the accessibility of a route is not well-defined.
Science
Objection 2: Limiting relative frequencies are not well-defined.
Science
Although anticoagulation is recommended, its optimal timing is not well-defined.
Treatments are not well-defined.
News & Media
What it means to "coordinate," however, is not well-defined.
News & Media
On the surface, these structures are not well-defined.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
51 human-written examples
Obama promised to sell this not-well-defined ICA phrase to the Europeans.
News & Media
This crucial term is not well defined.
News & Media
For these reasons, the KPZ equation was not well defined.
News & Media
"It won't help because government policies are not well defined.
News & Media
Unfortunately, these geologists write, the present "is not well defined".
News & Media
Expert writing Tips
Best practice
When using "not well-defined", provide context or examples to illustrate the lack of clarity. This helps the reader understand the specific aspects that are undefined or ambiguous.
Common error
Avoid simply stating that something is "not well-defined" without explaining why it lacks definition. Instead, identify the specific criteria, parameters, or aspects that contribute to the ambiguity.
Source & Trust
83%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not well-defined" functions as an adjective phrase, typically modifying a noun to indicate that it lacks clarity, precision, or specific boundaries. It suggests that the concept, term, or entity being described is ambiguous or lacks a clear and universally accepted definition. Ludwig confirms its correct usage.
Frequent in
Science
60%
News & Media
30%
Formal & Business
10%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "not well-defined" is a grammatically sound and frequently used adjective phrase that highlights a lack of clarity or precision. Ludwig AI's analysis confirms its correct usage. It is most commonly found in scientific, news, and formal business contexts to express ambiguity or uncertainty. To enhance clarity, always provide specific examples or explanations when using this phrase. Alternatives such as "vague", "ambiguous", or "poorly defined" can be used depending on the context. While "not well-defined" is a versatile phrase, it is important to avoid overusing it without providing specific details about the source of the ambiguity.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
poorly defined
Direct synonym with a slightly stronger negative connotation.
ill-defined
Similar to 'poorly defined', suggesting a lack of clear boundaries or characteristics.
vague
Implies a lack of specificity or detail.
ambiguous
Suggests the possibility of multiple interpretations.
imprecise
Highlights a lack of accuracy or exactness.
undefined
Suggests a complete lack of definition or boundaries.
unclear
Indicates a lack of clarity or understanding.
nebulous
Describes something hazy, indistinct, or vague.
loosely defined
Suggests a flexible or broad definition with room for interpretation.
incompletely defined
Highlights that the definition is missing some components or elements.
FAQs
What does "not well-defined" mean?
The phrase "not well-defined" means that something lacks a clear or precise definition. It indicates ambiguity or a lack of specific parameters.
How can I use "not well-defined" in a sentence?
You can use "not well-defined" to describe concepts, terms, or situations that are unclear. For example: "The scope of the project is "not well-defined", leading to confusion among team members."
What are some alternatives to "not well-defined"?
Alternatives include "vague", "ambiguous", "poorly defined", or "unclear". The best choice depends on the specific context.
Is it better to say "undefined" or "not well-defined"?
Both "undefined" and "not well-defined" indicate a lack of definition. "Undefined" suggests a complete absence of definition, while "not well-defined" implies that a definition exists but is inadequate or unclear. The choice depends on the degree of ambiguity you want to convey.
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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
83%
Authority and reliability
4.3/5
Expert rating
Real-world application tested