I will certainly not do it vs I certainly won't do it

Both phrases are correct. They convey the same meaning of expressing certainty about not doing something. The choice between 'I will certainly not do it' and 'I certainly won't do it' is a matter of the writer's personal preference or style.

Explained by Jennifer
Editor at TextRanch

Last updated: February 19, 2025 • 5980 views

This phrase is correct and commonly used in English.

"I will certainly not do it"

This phrase is used to express a strong certainty about not doing something in the future.

Show examples from the web [+]

I will certainly not be authorizing a drone strike in Pakistan.
I will certainly not hold it against you.
And I will certainly not forget the matter when we take our leave today.
Mr President, I will certainly not have anything to say about legionella at this point.
I will certainly not be supporting this report on that basis, and I regret that situation.
So, if any of you decide that you have to leave now, I will certainly not hold it against you.
But I will probably manage to stop myself from asking you your views on voluntary set-aside since you will certainly not be able to answer that question.
So I, for one, will not repent and I will certainly not join Mr Bushill-Matthews on Wednesday.
I will certainly not go so far as to say that this will happen again; this will depend on how things pan out, but there must be clear progress.
Corruption during these processes will certainly not help mitigate any problems and needs to be countered.
And repairing that equipment will certainly not solve your problems.
Solidarity will certainly not be lacking.
The fishing agreement will certainly not help the poor local fishermen in Senegal.
It will certainly not be these financial solutions that resolve the major problems in Europe.
Otherwise the citizens of Europe will certainly not accept it.
Most importantly of all, it will certainly not be in the interests of freedom of choice for the citizens of Europe.
With this diagnosis, we will certainly not succeed in reducing the risks of proliferation.
Before the board meeting, he will certainly not step on Korean soil.
The strategy of making early concessions in the hope of later benefits will certainly not work.
This will certainly not be established by the agreement under discussion.

Alternatives:

I definitely will not do it
I am absolutely not going to do it
I will not do it for sure
I will not do it without a doubt
I will not do it under any circumstances

This phrase is correct and commonly used in English.

"I certainly won't do it"

This phrase is also used to express a strong certainty about not doing something in the future.

Show examples from the web [+]

And I certainly won't be forgotten there.
And I certainly won't be forgotten there.
I certainly won't miss that waistline.
And I certainly won't send her back to that laundry.
I certainly won't be following your obscure customs.
I certainly won't have any friends.
- I certainly won't say anything.
And with 20 years of records to comb through, I certainly won't have time to comment to the press.
I certainly won't tell them that you killed your parents.
I certainly won't surrender to this little girl!
I don't know, but I certainly won't draw it out.
The Children's Welfare Officer certainly won't be impressed.
One like certainly won't be easy.
The People's Princess almost certainly won't tell me anything.
Mccoy certainly won't let me.
And it certainly won't be the last.
And you certainly won't destroy me with that.
Magistrate Labourdette certainly won't do that.
Tom certainly won't get my vote.
I won't have to put on any airs, and I certainly won't be putting on my pants.

Alternatives:

I definitely won't do it
I am absolutely not going to do it
I won't do it for sure
I won't do it without a doubt
I won't do it under any circumstances

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I will certainly not do it vs I certainly won't do it

"I will certainly not do it"

"I certainly won't do it"

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