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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
sure of what
Grammar usage guide and real-world examplesUSAGE SUMMARY
'sure of what' is correct and usable in written English.
You could use it when asking someone to clarify something that was said or to further explain what they mean. For example, "You want to redecorate the house? I'm not sure of what you mean."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
60 human-written examples
We're just not sure of what.
News & Media
I am not sure of what.
News & Media
I was pretty sure of what I was doing.
News & Media
But he needed to be sure — sure of what?
News & Media
But they were not sure of what they needed.
News & Media
It was accused of being sure of what it was against but less sure of what it was for.
News & Media
And Sloan was sure of what he was seeing.
News & Media
You get engaged when you're sure of what you want".
News & Media
They were both completely sure of what they looked like".
News & Media
It's a hybrid, but I'm not sure of what.
News & Media
I'm not really sure of what I want".
News & Media
Expert writing Tips
Best practice
Use "sure of what" to express confidence or certainty regarding a specific matter. For instance, "Before investing, be sure of what your goals are."
Common error
Avoid using "sure of what" when a more direct statement of certainty is possible. For example, instead of saying "I'm sure of what I saw," it's clearer to say "I'm certain I saw it."
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "sure of what" functions as a prepositional phrase that modifies a verb or adjective, indicating a state of certainty or confidence about a specific thing or action. It adds detail by specifying the object of one's certainty. Ludwig AI confirms its common and correct usage.
Frequent in
News & Media
50%
Science
20%
Wiki
15%
Less common in
Formal & Business
10%
Encyclopedias
3%
Social Media
2%
Ludwig's WRAP-UP
In summary, the phrase "sure of what" is a grammatically sound and commonly used prepositional phrase that expresses certainty or confidence about a particular thing or action. As verified by Ludwig AI, this expression is appropriate across a range of contexts, from news and media to scientific and formal business writing. When using "sure of what", it's important to ensure clarity and avoid unnecessary indirectness, opting for more direct statements when possible. Consider alternatives like "certain about what" or "confident in what" to achieve the desired nuance. Finally, remember to be specific about the object of your certainty to provide clear and effective communication.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
certain about what
Replaces "sure" with "certain", emphasizing a firm conviction.
confident in what
Substitutes "sure" with "confident", highlighting trust in one's judgment.
convinced of what
Uses "convinced" to suggest a state of being fully persuaded.
aware of what
Replaces "sure" with "aware", focusing on knowledge or consciousness of something.
knowledgeable about what
Emphasizes expertise or detailed understanding.
clear about what
Focuses on the lack of ambiguity or confusion.
informed of what
Indicates possession of the necessary information.
decided on what
Highlights a firm resolution or choice.
positive about what
Conveys optimism and assurance.
undecided about what
Indicates a lack of certainty or decision.
FAQs
How can I use "sure of what" in a sentence?
You can use "sure of what" to express a lack of doubt or uncertainty about something. For example, "Are you "certain of what" you're doing?" or "I want to be "positive of what" the test results will be before telling anyone."
What's the difference between "sure of what" and "sure about what"?
While both phrases convey certainty, "sure of what" often refers to specific knowledge or understanding, whereas "sure about what" can be used more broadly. For example, you might be "sure of what" the instructions say, but "sure about what" your overall goals are.
What can I say instead of "sure of what"?
You can use alternatives like "certain about what", "confident in what", or "convinced of what" depending on the context.
Is it always necessary to use "sure of what"?
No, sometimes a more direct statement of certainty is preferable. For example, instead of "I am sure of what I need", you could say "I know what I need" to be more concise.
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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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested