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
performance is unclear
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "performance is unclear" is correct and usable in written English.
It can be used when discussing the ambiguity or lack of clarity regarding someone's performance in a specific context, such as work or sports. Example: "After reviewing the results, it became evident that the performance is unclear, making it difficult to assess the team's effectiveness."
✓ Grammatically correct
Science
News & Media
Formal & Business
Alternative expressions(1)
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
18 human-written examples
Just how much praise Trump deserves for this performance is unclear.
News & Media
The current state of cholecystectomy outcomes, including variations in hospital performance, is unclear.
For example, flaked crystals have been used in successfully promoting Folgers coffee, even though flaking's contribution to product performance is unclear.
News & Media
Yet, the role of such rapid-mixing systems on the effectiveness of the coagulation performance is unclear.
Science
Both smoking and nicotine can facilitate cognitive efficiency in humans, however the exact mechanism underlying this improvement in cognitive performance is unclear.
Science
The side effects of acute (single dose) and short term (<7 days) GC administration are less severe, therefore the impact on exercise performance is unclear.
Human-verified similar examples from authoritative sources
Similar Expressions
42 human-written examples
However, the effects of different tDCS montages on modulating motor performance are unclear.
Science
Although some studies have indicated that educational agents in competitive environments has positive effects on students' perception and attribution, its impacts on students' motivation and performance are unclear.
Science
Startup Quanergy, which last year scored $90 million in funding, says it will start producing solid-state lidar sensors at a factory in Massachusetts this year and sell them for $250, but full details of their performance are unclear.
News & Media
The consequences of poor disclosure or poor performance are unclear and seem to aim directly at reputational impact rather than at high-grading ESG performance.
News & Media
Still, the qualities that make it easier for certain bacteria to pick up the resistance gene, and other genes that enhance that one's performance, are unclear, the researchers report in the 1 March issue of Lancet Infectious Diseases.
Science & Research
Expert writing Tips
Best practice
When using "performance is unclear", ensure the context provides enough information for the reader to understand what specific aspect of the performance lacks clarity. Be precise to avoid further confusion.
Common error
Avoid using "performance is unclear" as a generic statement. Instead, pinpoint the specific reasons for the lack of clarity, such as "the metrics for evaluating performance are unclear" or "the expected outcomes of the performance are unclear".
Source & Trust
84%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "performance is unclear" functions as a statement expressing a lack of clarity or understanding regarding a specific performance. As Ludwig AI explains, the phrase is grammatically correct and usable in written English. Examples from Ludwig show its use in diverse contexts, such as evaluating Trump's job creation figures or assessing hospital surgical outcomes.
Frequent in
Science
42%
News & Media
33%
Formal & Business
25%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "performance is unclear" is a grammatically correct and commonly used expression to convey a lack of clarity or understanding regarding a particular performance. As indicated by Ludwig AI, the expression is appropriate for written English. The phrase appears most frequently in science and news media contexts and serves to express uncertainty about effectiveness, causation, or expected outcomes. While several semantically related alternatives exist, such as "performance is ambiguous" or "performance lacks clarity", it's essential to use precise language to avoid further confusion. When using the expression, ensure the context provides sufficient information for the reader to understand the specific area where clarity is lacking.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
performance is uncertain
Replaces "unclear" with "uncertain", emphasizing the unpredictable nature of the performance.
performance is ambiguous
Substitutes "unclear" with "ambiguous", highlighting the multiple possible interpretations of the performance.
performance lacks clarity
Rephrases to emphasize the absence of clarity in the performance.
performance is not well-defined
Focuses on the lack of a clear definition or standard for the performance.
it is difficult to assess performance
Shifts the focus to the difficulty in evaluating the performance.
the performance is not obvious
Uses "not obvious" to indicate that the performance is not easily understood.
the performance is questionable
Indicates doubt or uncertainty about the quality or validity of the performance.
performance is open to interpretation
Highlights the subjective nature of understanding the performance.
the reasons for the performance are obscure
Focuses on the hidden or unknown causes behind the performance.
the effect of the performance is unknown
Emphasizes that the consequences or impact of the performance are not yet determined.
FAQs
How can I use "performance is unclear" in a sentence?
You can use "performance is unclear" to express that the results, impact, or reasons behind a particular action or process are not easily understood. For example, "The impact of the new policy on employee performance is unclear".
What are some alternatives to "performance is unclear"?
Alternatives include "performance is ambiguous", "performance lacks clarity", or "performance is uncertain" depending on the specific nuance you want to convey.
What does it mean when someone says "performance is unclear"?
It typically means that the expected outcomes, evaluation criteria, or the reasons behind the observed performance are not well-defined or understood. It implies a need for further investigation or clarification.
Is it better to say "performance is unclear" or "the reasons for the performance are unclear"?
It depends on what you want to emphasize. "Performance is unclear" focuses on the difficulty in understanding the performance itself. "The reasons for the performance are unclear" shifts the focus to the lack of understanding about the causes or motivations behind it.
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
4.1/5
Expert rating
Real-world application tested