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
unclear idea
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "unclear idea" is correct and usable in written English.
It can be used when describing a concept or thought that lacks clarity or is difficult to understand. Example: "The presentation was filled with an unclear idea that left the audience confused about the main message."
✓ Grammatically correct
News & Media
Science
Wiki
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
4 human-written examples
I mean, we are?" " — and what is the point, if there are clear obstacles or any unclear idea of where this is headed, of continuing?
News & Media
If we have an unclear idea of what we owe our country, then we are failing to engage as full citizens.
News & Media
The SPIs present as facing important treatment decisions over the next few weeks, while having an unclear idea of prognosis.
Science
If your letter is too long or detailed, the reader will be inclined to skim its contents and end up with an unclear idea of the exact problem or your desired resolution.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
56 human-written examples
The CAM assesses the presence of four delirium features: acute onset and fluctuating course, inattention and distractibility, disorganized thinking and illogical or unclear ideas, and an alteration in consciousness.
Science
Mr. Jackson said today that the suggestion he pressured companies to contract with certain businesses or donate to his groups was "a perverse idea from an unclear mind".
News & Media
It is unclear whose idea it was to conduct an investigation so close to the election of Mr. Menendez's lease of a building he had sold years earlier.
News & Media
I have also heard this dish called polpettone, and pastìccio – which comes from the latin pastīcium, originally signifying a filled pie, but has been adopted to describe various things: a piece of opera comprising work from many a composer; an unclear intellectual idea or theory; or simply a confused and messy situation.
News & Media
Nate Silver has Obama's chances of reëlection around a ninety-per-cent certainty; Sam Wang, of the "Princeton Consortium" — though exactly who consorts with him in Princeton is unclear, the idea of consorting, electorally, is too winning not to relish — has Romney's odds even longer than that.
News & Media
While the defining features of these groups are still unclear, some ideas are emerging as discussed in the following paragraphs.
Science
It is unclear where this idea came from and whether it is good or bad.
News & Media
Expert writing Tips
Best practice
Use stronger, more descriptive adjectives in place of 'unclear' to improve the impact and readability of your work. For example, rather than stating something is an "unclear idea", you could replace it with "vague notion", "ambiguous concept" or "fuzzy concept".
Common error
Avoid using "unclear idea" as a crutch to mask a lack of specific knowledge. Instead, research and clarify the concept you're discussing, and then articulate it precisely.
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "unclear idea" functions as a noun phrase where the adjective "unclear" modifies the noun "idea". According to Ludwig AI, this phrase is grammatically correct and is used to describe a concept or thought that lacks clarity or is difficult to understand. The provided examples from Ludwig illustrate how this phrase is used in various contexts to denote a lack of clarity in concepts or proposals.
Frequent in
News & Media
50%
Science
30%
Wiki
20%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "unclear idea" is a grammatically sound and usable phrase that describes a concept lacking clarity. Ludwig AI confirms that this phrase appears across diverse contexts, but it is more frequent in news, science, and wiki content. When using this phrase, it's important to provide context to illustrate the lack of clarity, and considering alternatives like "vague notion" or "ambiguous concept" can add nuance to your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
vague notion
Emphasizes a lack of distinctness or precision.
ambiguous concept
Highlights the possibility of multiple interpretations.
fuzzy concept
Suggests a lack of sharp definition or outline.
ill-defined notion
Stresses the absence of clear boundaries or parameters.
imprecise thought
Focuses on the lack of accuracy or exactness in the idea.
nebulous thought
Implies that the idea is indistinct and lacks a clear form.
incomprehensible concept
Highlights that idea is not able to be understood.
murky concept
Focuses on the lack of transparency or clarity.
opaque concept
Emphasizes the difficulty in understanding the idea.
confused notion
Indicates a state of mental disarray or lack of coherence.
FAQs
How can I use "unclear idea" in a sentence?
You can use "unclear idea" to describe a concept that is not well-defined or is difficult to understand. For example: "The presentation was filled with an unclear idea that left the audience confused.".
What are some alternatives to "unclear idea"?
You can use alternatives such as "vague notion", "ambiguous concept", or "fuzzy concept" depending on the specific nuance you want to convey.
Is it better to say "unclear idea" or "vague idea"?
Both "unclear idea" and "vague idea" are acceptable. "Vague" might suggest a lack of detail, while "unclear" might suggest a lack of comprehensibility. The choice depends on the specific context.
What makes an idea "unclear"?
An idea can be "unclear" if it lacks sufficient detail, has conflicting elements, or uses language that is difficult to understand. Addressing these issues can help clarify the idea.
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
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested