Not sure whether vs unsure whether

Both "not sure whether" and "unsure whether" are correct and commonly used phrases in English. They are interchangeable and convey the same meaning.

Last updated: April 08, 2024

Not sure whether

This phrase is correct and commonly used in English.

This phrase is used to express uncertainty about a situation or decision.

Examples:

I'm not sure whether I should go to the party or not.
She's not sure whether she locked the door before leaving.
They're not sure whether it will rain tomorrow.
He's not sure whether he should accept the job offer.
We're not sure whether the meeting is still on.

Show examples from the web [+]

I'm not sure whether to feel admiration or pity.
I'm not sure whether I can live with the uncertainty.
Not sure whether the pug likes it though!
I am not sure whether everybody else does.
I am not sure whether it is sensible to conduct debates without the Council.
I am not sure whether to call my books a work of architecture.
I'm not sure whether to offer you my condolences or my congratulations.
I'm just not sure whether I should be welcoming it on board or apologizing.
I'm not sure whether to take that as a complement or not.
I'm not sure whether I'm happier you haven't left yet Or that you agree with me for once.
The Council should therefore be here. I am not sure whether we have the power to force its presence.
I am not sure whether I am supposed to say something about Malta now.
I am not sure whether to call on Mr Papoutsis's generosity and that of Parliament's services, but Mr Titley is here.
I am not sure whether this excellent and instructive proverb is also found in the other ten official languages.
I am not sure whether it is enough that are you are personally bringing all your weight to bear on this issue.
I am not sure whether you will be able to give me an answer to it straightaway or perhaps only in writing, after this question time.
I'm not sure whether to stay home or go out.
I am not sure whether the sentence I overheard was born of inexperience or total delirium.
Not sure whether enemy action... I'm fine.
Not sure whether we got a John or a Jane Doe.

Alternatives:

unsure whether

unsure whether

This phrase is correct and commonly used in English.

This phrase is used to express uncertainty about a situation or decision.

Examples:

I'm unsure whether I can finish the project on time.
She's unsure whether she should buy the red dress or the blue one.
They're unsure whether to invest in the stock market.
He's unsure whether he left his keys at home.
We're unsure whether the train will be delayed.

Show examples from the web [+]

Experts are unsure whether salmon navigate by memory, sense of smell, or by detecting variations in earth's magnetic field.
If you are unsure whether this privacy statement is in conflict with applicable local rules, you should not submit your information.
Scholars were unsure whether existing texts accurately represented the author's message.
For those people that are still unsure whether they should update to it, the following five reasons may help make the decision easier..
If you are unsure whether material on the Services provided is infringing, you should contact an attorney prior to sending notice.
And it got particularly terrifying when we got home from the hospital, and we were unsure whether our little baby boy was getting enough nutrients from breastfeeding.
Because the party portrayed itself as a national (and not class-based) party, its members were unsure whether to make specific appeals to the working-classes.
Women taking the pills feel younger, rejuvenated and more alive. If you're unsure whether the product actually works, the testimonials are there for everyone to see.
Travel Insurance: Travel Insurance is recommended for anyone who is unsure whether they may need to cancel.
In Canada, if you are unsure whether or not you should declare something, it is better to declare it than not.
Where they are unsure whether or not a food which they intend to place on the market within the Union falls within the scope of this Regulation, food business operators shall consult the Member State where they first intend to place the novel food.
If you are unsure whether they have a title (a business card should always carry it) then you should assume a title and use the one that is most likely to represent their trade.
2007-11-13 22:16:19 - Five reasons for preparing your own baby food Are you unsure whether you should make your own baby food at home or just buy it from the store?
Liu is unsure whether the New Year greeting tradition will survive the next generation.
LAWRENCE: This is one of those scenes that becomes really interesting when you're unsure whether or not August has seen them dancing.
Mr Garrow, I am unsure whether to admire your optimism or mock it.
Tacitus was unsure whether to classify the Fenni as Germanic or Sarmatian.
Maria Theresa still felt torn: though inclined to religious life, she was unsure whether she would ultimately leave her family.
Prior to this donation, the association was unsure whether appendant bodies of Freemasonry should be allowed to occupy rooms in the memorial.
Indeed, before the experiment, some L subjects were unsure whether 0 was odd or even and had to be reminded of the mathematical definition.

Alternatives:

not sure whether

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