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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
uncertain about what
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "uncertain about what" is correct and usable in written English.
You can use it when expressing doubt or lack of clarity regarding a specific subject or issue. Example: "I am uncertain about what the next steps should be in this project."
✓ 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
Mr. Castro became frustrated, uncertain about what to say.
News & Media
The dissident investors are also uncertain about what happens next.
News & Media
"I was uncertain about what was being accomplished".
News & Media
Some anchors seemed uncertain about what had just happened.
News & Media
"Yet other government agencies were uncertain about what was occurring".
News & Media
Mr. Markowitz said he had been uncertain about what he was expected to pay for.
News & Media
Mr. Bailey cannot remember ever feeling so uncertain about what the weather might bring.
News & Media
"But they are more uncertain about what the nature of the good is.
News & Media
He said manufacturers were now uncertain about what products they needed to make.
News & Media
After much study, he said, he remained uncertain about what restrictions should be employed.
News & Media
Parents regularly arrive at the shop uncertain about what kind of stick to buy their children.
News & Media
Expert writing Tips
Best practice
When using "uncertain about what", ensure the context clearly defines the source or cause of the uncertainty to avoid ambiguity. For example, specify whether the uncertainty stems from a lack of information, conflicting opinions, or unpredictable factors.
Common error
Avoid using "that" instead of "what" after "uncertain about". The correct phrase is "uncertain about what", not "uncertain about that", to properly introduce the specific subject of uncertainty.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "uncertain about what" functions as an adjectival phrase, specifically describing a state of doubt or lack of clarity regarding a particular subject or course of action. As confirmed by Ludwig, it's grammatically sound and widely used.
Frequent in
News & Media
50%
Science
30%
Formal & Business
10%
Less common in
Encyclopedias
5%
Wiki
3%
Reference
2%
Ludwig's WRAP-UP
The phrase "uncertain about what" is a grammatically correct and widely used adjectival phrase that expresses a state of doubt or lack of clarity. As Ludwig confirms, it’s suitable for various contexts, ranging from news and media to scientific discussions. While several alternative phrases exist, such as "unsure of what" or "doubtful about what", it’s essential to maintain clarity by specifying the source or cause of uncertainty. Avoiding common errors, such as using "that" instead of "what", ensures accurate and effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
unsure of what
Replaces "uncertain" with "unsure", maintaining the same meaning but with a slightly less formal tone.
doubtful about what
Substitutes "uncertain" with "doubtful", emphasizing a sense of disbelief or skepticism.
unclear on what
Replaces "uncertain" with "unclear", focusing on the lack of understanding.
unsure about the course of action
Replaces "what" with "the course of action", specifying that uncertainty is about the way forward.
confused about what
Changes "uncertain" to "confused", highlighting a lack of understanding and clarity.
hesitant about what
Changes "uncertain" to "hesitant", highlighting a reluctance to proceed due to a lack of clarity.
not knowing what
Simplifies the phrase to a more direct expression of lacking knowledge.
vague on what
Uses "vague" instead of "uncertain", suggesting a lack of specificity or detail.
perplexed about what
Substitutes "uncertain" with "perplexed", indicating a state of confusion.
at a loss regarding what
Expresses a state of being unable to determine what to do or think.
FAQs
How can I rephrase "uncertain about what" in a sentence?
You can use alternatives like "unsure of what", "doubtful about what", or "unclear on what" depending on the context.
Is it grammatically correct to say "uncertain about what"?
Yes, it is grammatically correct. The phrase "uncertain about what" is commonly used to express a lack of clarity or confidence regarding a specific issue.
What's the difference between "uncertain about what" and "unsure about what"?
The difference between "uncertain about what" and "unsure about what" is minimal. Both phrases convey a similar meaning, with "uncertain" being slightly more formal than "unsure".
How to use "uncertain about what" in a professional context?
In a professional context, use "uncertain about what" to express a lack of clarity or direction regarding tasks, strategies, or decisions. For example, "The team is uncertain about what steps to take next in the project".
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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
4.6/5
Expert rating
Real-world application tested