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
fuzzy concept
Grammar usage guide and real-world examplesUSAGE SUMMARY
"fuzzy concept" is correct and usable in written English.
You can use it when you are referring to an idea or concept which is vague or undefined. For example, "The idea of the American Dream is a fuzzy concept which has changed over time."
✓ Grammatically correct
News & Media
Science
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
59 human-written examples
But a proof is sometimes a fuzzy concept, subject to whim and personality.
News & Media
A good example of a fuzzy concept is cool air -- it has a clear meaning, but it is not black or white.
News & Media
Experts on the Russian legal system say ownership can be a fuzzy concept in Russia, where significant assets are rarely bought or sold in an entirely straightforward way.
News & Media
He wrote: That everyone understands objectivity differently makes it a dangerously fuzzy concept, easy road kill in the rush to new journalistic techniques.
News & Media
The idea "that such a fuzzy concept should be captured in the measurement of national output is absurd," Mr Letwin says.Government statisticians insist that everything will be transparent.
News & Media
"But the only road map Putin laid out today was a fuzzy concept of a grand coalition to fight terrorism arm in arm with Bashar al-Assad, the very man the Americans say is the source of the problem".
News & Media
Mr Vedral's notion of information is not the somewhat fuzzy concept most people have of it, but a precise mathematical definition that owes itself to Claude Shannon, an American mathematician considered to be the father of "information theory".
News & Media
This will involve monetary policy relying on tools other than the interest rate, like adjusting regulatory capital ratios.Central bankers might also be more mindful of the infuriatingly fuzzy concept of long-term stability.
News & Media
He goes on to explain how Sanskrit scholars understood aesthetics, choosing ancient texts which, he says, describe "resonance"—a fuzzy concept involving feelings reverberating with soul and emotional bonding, which can change with different readers and different readings.
News & Media
The truths described in its millions of articles evolve over time and through the dialectic of editing wars, leading to a new and fuzzy concept of reality dubbed "wikiality".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
1 human-written examples
Object-Fuzzy Concept Network (O-FCN) is a recent knowledge representation model to integrate Fuzzy Ontologies in Information Retrieval systems.
Expert writing Tips
Best practice
To avoid ambiguity when discussing a "fuzzy concept", define the boundaries or parameters of the concept as you understand it, even if those boundaries are not universally agreed upon. This helps the audience understand your specific perspective.
Common error
Avoid using "fuzzy concept" as a substitute for detailed analysis. Instead of dismissing a topic as inherently "fuzzy", identify the specific areas of vagueness or ambiguity. For instance, rather than labeling "sustainability" as a "fuzzy concept", discuss the lack of consensus on specific metrics or implementation strategies.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "fuzzy concept" functions as a noun phrase, where "fuzzy" modifies the noun "concept". It describes a concept that is vague, unclear, or lacks precise definition. Ludwig AI's analysis and examples confirm this usage across various contexts.
Frequent in
Science
33%
News & Media
33%
Formal & Business
17%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "fuzzy concept" is a commonly used phrase to describe an idea or term lacking clear definition, frequently appearing in both News & Media and scientific contexts. As Ludwig AI confirms, the phrase is grammatically correct and serves to acknowledge or critique ambiguity. While widely used, especially according to Ludwig, it's important to follow best practices and avoid overgeneralization when employing this term. Using alternatives like "vague notion" or "ill-defined idea" can provide nuance, and always be sure to clarify the specific aspects of the concept you are discussing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
vague notion
Replaces "concept" with "notion", suggesting a less concrete or defined idea. It reduces the technical or formal tone.
ill-defined idea
Highlights the lack of clear definition, focusing on the incomplete or ambiguous nature of the idea.
unclear abstraction
Substitutes "concept" with "abstraction", implying a more theoretical and less tangible understanding. Shifts from more real usage to philosophy and speculative science.
ambiguous term
Emphasizes the potential for multiple interpretations, focusing on the lack of a single, clear meaning.
imprecise understanding
Focuses on the lack of exactness in comprehension. Changes perspective to the degree of knowledge instead of the object of it.
nebulous idea
Uses "nebulous" to suggest a hazy or indistinct quality. It's less frequent than other alternatives and perhaps somewhat poetic.
murky concept
Murky refers to something that is dark and difficult to see through, thus making a direct comparison.
poorly defined term
Highlights the inadequate definition of a term, indicating a lack of clarity and specificity.
indistinct notion
Highlights the lack of clear separation or definition in idea, with an almost ethereal tone.
hazy idea
Similar to "nebulous", indicating a lack of clarity or distinctness, but somewhat more common.
FAQs
How can I use "fuzzy concept" in a sentence?
You can use "fuzzy concept" to describe an idea or term that lacks clear definition or has ambiguous boundaries. For instance, "The notion of corporate social responsibility remains a "fuzzy concept" in some industries."
What's a good alternative to "fuzzy concept"?
Depending on the specific context, you could use alternatives like "vague notion", "ill-defined idea", or "ambiguous term" to convey a similar meaning.
In what fields is the term "fuzzy concept" commonly used?
The term "fuzzy concept" is commonly used in fields such as philosophy, social sciences, computer science (particularly in fuzzy logic), and business to describe ideas that are not precisely defined or have overlapping meanings.
Is "fuzzy concept" a negative term?
The term "fuzzy concept" is not inherently negative, it simply indicates a lack of precise definition. However, it can imply a need for clarification or a potential for misunderstanding if not properly addressed in a discussion or analysis.
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
4.5/5
Expert rating
Real-world application tested