not sure that vs unsure that

Both "not sure that" and "unsure that" are correct phrases in English. They are interchangeable and can be used to express doubt or uncertainty about something. The choice between them is a matter of personal preference or style.

Last updated: April 08, 2024

not sure that

This phrase is correct and commonly used in English to express doubt or uncertainty about something.

This phrase is used to indicate a lack of certainty or confidence in a statement or situation. It is often followed by a clause or statement.

Examples:

I'm not sure that I can make it to the meeting tomorrow.
She's not sure that she locked the door before leaving the house.
He's not sure that he understands the instructions correctly.
They're not sure that the project will be completed on time.
We're not sure that the weather will hold up for the outdoor event.

Show examples from the web [+]

I'm not sure that's a compliment.
I'm not sure that I'm stable enough.
Therefore, I'm not sure that he should be executed.
I'm not sure that's practical.
I'm not sure that I can do this.
I'm not sure that I understand the meaning of your story.
I'm not sure that I'd mind anymore.
But I'm not sure that he has...
I'm not sure that your friendliness is very effective.
I'm not sure that I understand.
I'm not sure that matters.
I'm not sure that this is the healthiest environment for your children.
I'm not sure that's fair.
I'm not sure that's a great point.
But I am not sure that it was good.
You know, I'm not sure that...
I'm not sure that's Pete.
I'm just not sure that's Pete.
Well, I'm not sure that's an option.
I'm just not sure that would be a wise idea.

Alternatives:

unsure that
doubtful that
uncertain that
questioning whether
hesitant that

unsure that

This phrase is correct and commonly used in English to express doubt or uncertainty about something.

This phrase is used to indicate a lack of certainty or confidence in a statement or situation. It is often followed by a clause or statement.

Examples:

I'm unsure that I can meet the deadline for the project.
She's unsure that she made the right decision.
He's unsure that he can trust his new colleague.
They're unsure that the plan will work as expected.
We're unsure that the budget will be approved.

Show examples from the web [+]

If you are unsure that your photoshop needs or is taking more memory from your system - check built- in efficiency meter.
I think if you're unsure that you can complete a crochet project but then see that you can get the gauge swatch right then you might have the confidence that you need to move forward with the rest of the project.
And we were so unsure that this would work.
I am unsure that the already overstretched B7-6000 line should feature here.
There are those who are unsure that a descendent of John Wilkes Booth should be working this case.
This is why I am unsure that the use of the EU Solidarity Fund for natural disasters would be appropriate, as it may undermine this principle at the core of the Environmental Liability Directive.
If you haven't received a reply or you are unsure that you will obtain the extension, the best for you is to return before the end of the 3-month period.
Devora, have you ever gotten involved with someone where you're just a little bit unsure that it's the right thing?
'The technical measures taken by the manufacturer must be such as to unsure that the tailpipe and evaporative emissions are effectively limited, pursuant to this Directive, throughout the normal life of the vehicle and under normal conditions of use.
I thank the President-in-Office for his answer, which I believe was correct and which demonstrated great respect for Algeria, although I am unsure that it was sufficient from the point of view of effectiveness.
The CHMP had major concerns regarding the way the medicine is manufactured, and they were unsure that the medicine that would have been marketed would have been comparable to the one used in the clinical trial.
It wasn't a perfect day for Mercedes but it was a good one for Formula 1. Wolff added that Mercedes must learn from its defeat, but is unsure that the squad could have beaten Vettel had they attempted a different strategy.
Mr President-in-Office of the Council, I am unsure whether that is a question or a threat.
And if you're unsure about that, then you always just call her.
We want an open web, and Google talks a good game about that, but I am still unsure if that is really their goal.
In order to sell to the potential client we must first have an exhaustive knowledge of the products and/or services we are offering, because a person who is unsure of that will certainly not be able to create a feeling of trust.
Recently, I seemed to notice that many reviews have a new undertone of uncertainty, like an emphasis that's unsure of itself.
Are you that unsure about me?
I myself believe that we should place no trust in a power which is so unsure of itself that it is capable of condemning love as some kind of subversive act.
So unless the prosecution is so unsure of its case that he can't handle a law student, we ask that she be allowed to question the witness.

Alternatives:

not sure that
doubtful that
uncertain that
questioning whether
hesitant that

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