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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
be unclear on
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "be unclear on" is correct and usable in written English.
It can be used when expressing confusion or lack of understanding about a specific topic or issue. Example: "I tend to be unclear on the details of the project, so I would appreciate some clarification."
✓ 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
12 human-written examples
Colt Kennedy again: "Should anyone be unclear on the rules of qualification (can't imagine why), some absolutely wonderful person on Wikipedia made the following chart.
News & Media
Specialization to an environment can be difficult to understand: it may be unclear on what properties of the environment the agent depends, or in what manner it depends on each individual property.
Science
Trump even appeared to be unclear on how far away Puerto Rico is from the mainland United States, saying there's "a very big ocean" rescuers have to cross to get there.
News & Media
It's okay to be unclear on something as long as you're upfront about it.
News & Media
Although magnetic resonance imaging (MRI) is the reference standard, before its performance or upon contraindications, CEUS can increase diagnostic accuracy of baseline US [55, 56], by revealing decreased but present blood flow (contrary to absent flow due to obstruction), a finding suggesting more cephalad occlusion that may be unclear on colour Doppler US (Fig. 15).
Science
Cain also "appeared to be unclear on the issue of collective bargaining as it involves federal employees".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
48 human-written examples
It was unclear on Monday whether Bulo Burti was one of the first towns the insurgents had seized — and held.
News & Media
It is unclear on what basis they made the determination that one claim was more credible than the other".
News & Media
It was unclear on Saturday if Mr. Lakdim had been holding more than one person hostage.
News & Media
I'm unclear on Lent.
News & Media
He was unclear on the specifics.
News & Media
Expert writing Tips
Best practice
When using "be unclear on", follow it with the specific topic or aspect that is causing confusion. For example, "I'm unclear on the project's objectives" is more informative than "I'm unclear on the project".
Common error
Avoid using "be unclear on" without specifying what you're unclear about, as this can come across as vague and unhelpful. Instead of saying "I'm unclear on this", specify "I'm unclear on the budget allocation for this project".
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "be unclear on" functions as a predicative adjective phrase, describing a state of uncertainty or lack of understanding. It is commonly used to express that someone lacks complete information or is confused about a particular topic. Ludwig confirms this phrase is appropriate in written English.
Frequent in
News & Media
50%
Science
25%
Wiki
25%
Less common in
Formal & Business
0%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "be unclear on" is a grammatically correct and usable way to express a lack of understanding or confusion. According to Ludwig, the phrase is appropriate in written English. It appears most frequently in news and media contexts but is versatile enough for use in scientific, and general writing. To ensure clarity, it's best to specify the exact topic causing confusion. Related alternatives include "be uncertain about" and ""lack clarity on"". By providing more specific information when using the phrase, you can improve communication and avoid vagueness.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Be uncertain about
Focuses on a lack of sureness or confidence regarding something.
Be confused about
Emphasizes a state of mental disarray or inability to comprehend.
Lack clarity on
Highlights the absence of clearness or distinctness on a topic.
Be vague about
Suggests a lack of precision or detail in understanding.
Be hazy about
Implies a blurred or indistinct understanding of something.
Be ignorant of
Focuses on a lack of knowledge or awareness about something.
Be unaware of
Emphasizes a lack of consciousness or realization about something.
Have no idea about
Indicates a complete absence of understanding or knowledge.
Be uninformed about
Highlights a lack of information or education on a topic.
Misunderstand
Implies an incorrect interpretation or comprehension.
FAQs
What does it mean to "be unclear on" something?
To "be unclear on" something means to lack a complete understanding of it, or to be confused about certain aspects of it. It implies a need for further clarification or explanation.
How can I politely express that I "am unclear on" something?
You can politely express that you "are unclear on" something by saying "Could you clarify...?", "I'm not sure I fully understand...", or "I might "be confused about"...".
What are some alternatives to saying "I'm unclear on this"?
Alternatives include "I don't fully understand this", "I need more clarification on this", or "I "lack clarity on" this".
Is it better to say "be unclear on" or "be unclear about"?
Both "be unclear on" and "be unclear about" are grammatically correct and can be used interchangeably, although "be unclear about" might be slightly more common. The choice often depends on personal preference or the specific context.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested