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
this is unclear
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this is unclear" is correct and usable in written English.
You can use it when you want to express that something is not easily understood or lacks clarity. Example: "The instructions provided were confusing, and I must say, this is unclear."
✓ Grammatically correct
News & Media
Science
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
60 human-written examples
Again, this is unclear.
News & Media
This is unclear.
News & Media
This is unclear at present.
News & Media
"The purpose of this is unclear".
News & Media
What exactly is driving this is unclear.
News & Media
However, this is unclear and controversial.
Academia
The reason for this is unclear.
News & Media
Even this is unclear right now.
News & Media
Why we do this is unclear.
News & Media
How New Yorkers feel about all this is unclear.
News & Media
David's role in all of this is unclear.
News & Media
Expert writing Tips
Best practice
When using "this is unclear", ensure the context provides enough information for the reader to understand what specifically lacks clarity. Offer potential reasons or areas for further investigation to add value.
Common error
Don't use "this is unclear" without specifying what "this" refers to. Ambiguous references can confuse readers. Always clarify the subject to which the lack of clarity applies.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is unclear" functions as a declarative statement expressing a lack of clarity or understanding regarding a specific subject or situation. Ludwig AI confirms its grammatical correctness and usability.
Frequent in
News & Media
39%
Science
38%
Formal & Business
9%
Less common in
Academia
4%
Wiki
2%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "this is unclear" is a common and grammatically sound way to express a lack of clarity or understanding. As indicated by Ludwig AI, it is widely used across various domains, including news, science, and formal communication. While interchangeable with phrases like "this is not clear", choosing appropriate synonyms such as "this is ambiguous" or "this is vague" can provide more nuance. When using this phrase, ensure that the context clearly identifies what "this" refers to, and consider providing suggestions for clarification to enhance the communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
this lacks clarity
Rephrases the sentence to emphasize the absence of clarity directly.
this is ambiguous
Replaces "unclear" with "ambiguous", indicating the statement has multiple possible interpretations.
this is vague
Substitutes "unclear" with "vague", suggesting the statement lacks precision or detail.
this is not well-defined
Replaces "unclear" with "not well-defined", suggesting that the statement is imprecise and lacks specific parameters.
this is obscure
Replaces "unclear" with "obscure", implying the statement is hidden or not easily discovered.
this is doubtful
Replaces "unclear" with "doubtful", indicating uncertainty about the truth or validity of the statement.
this is uncertain
Substitutes "unclear" with "uncertain", highlighting a lack of sureness or predictability.
this is undefined
Replaces "unclear" with "undefined", suggesting the statement lacks a clear meaning or scope.
this is mysterious
Substitutes "unclear" with "mysterious", implying the statement is puzzling or difficult to explain.
this is equivocal
Replaces "unclear" with "equivocal", suggesting the statement is open to different interpretations or meanings.
FAQs
What does "this is unclear" mean?
The phrase "this is unclear" means that something is not easily understood, lacks clarity, or is ambiguous. It suggests a lack of precision or certainty about a particular subject or statement.
How can I use "this is unclear" in a sentence?
You can use "this is unclear" to express uncertainty or lack of understanding. For example, "The instructions were poorly written, and as a result, "this is unclear"."
What are some alternatives to "this is unclear"?
Alternatives to "this is unclear" include "this is ambiguous", "this is vague", or "this lacks clarity". The best choice depends on the specific nuance you wish to convey.
Is it better to say "this is unclear" or "this is not clear"?
"This is unclear" and "this is not clear" are largely interchangeable. Both convey a lack of clarity, but "this is unclear" may sound slightly more formal or understated. The choice depends on personal preference and the 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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested