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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
I guarantee that
Grammar usage guide and real-world examplesUSAGE SUMMARY
"I guarantee that" is correct and usable in written English.
You can use this phrase to express your assurance that something will happen or that a statement is true. For example, "I guarantee that I'll be there on time."
✓ Grammatically correct
News & Media
Sports
Opinion
Alternative expressions(20)
I recognize that
now certify that
I stipulated that
it has been brought to my attention
as far as I know
I realize that
hereby confirmed that
I certify
I will ensure that
you can be sure that
I grant that
hereby certified that
I take responsibility for
I hope that
please be sure that
It is not news to me
i believe that
please rest assured that
my impression is that
It is certain that
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
I guarantee that will be more popular.
News & Media
"I guarantee that would probably make it easier to recruit".
News & Media
After one or two very public dismissals, I guarantee that trust, teamwork and confidentiality will prevail.
News & Media
Can I guarantee that?
News & Media
"I guarantee that will change," Tilden said.
News & Media
And I guarantee that is just the beginning.
News & Media
I guarantee that.
News & Media
I guarantee that you will love it.
News & Media
"I guarantee that there have been hundreds.
News & Media
I guarantee that there will be no shortage of applicants.
News & Media
"I guarantee that something major will be found," he says.
News & Media
Expert writing Tips
Best practice
Use "I guarantee that" to express strong confidence in a future outcome or the truth of a statement. It's most effective when you have control or significant influence over the situation.
Common error
Avoid using "I guarantee that" too frequently in your writing. Overuse can diminish its impact and make your claims sound less credible. Vary your language by using alternatives like "I assure you", "I'm certain", or "you can be sure".
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "I guarantee that" functions as a performative utterance, where the act of saying it constitutes making a guarantee. It introduces a statement that the speaker asserts with strong confidence and intention to ensure its truth or fulfillment. Ludwig AI confirms its proper usage and broad application.
Frequent in
News & Media
50%
Sports
20%
Opinion
10%
Less common in
Science
8%
Formal & Business
7%
Wiki
5%
Ludwig's WRAP-UP
In summary, "I guarantee that" is a versatile phrase used to express strong confidence and assurance. Ludwig AI validates its grammatical correctness and common usage across various contexts, particularly in news, sports, and opinion pieces. While its assertive tone can be effective, it's important to use it judiciously to maintain credibility. By considering alternative phrases and understanding its purpose, you can effectively convey certainty and build trust with your audience. Remember to avoid overuse and tailor your language to suit the specific context for maximum impact.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
I assure you that
Replaces "guarantee" with "assure", offering a slightly more formal tone.
I can assure you that
Adds "can" to soften the tone while still providing reassurance.
You can rest assured that
Shifts the focus to the listener, offering comfort and certainty.
I can promise you that
Substitutes "guarantee" with "promise", which can be perceived as slightly less assertive.
I give you my word that
Emphasizes the speaker's personal commitment and trustworthiness.
I'm certain that
Expresses confidence in an outcome or statement without a direct promise.
Without a doubt
An emphatic statement of certainty, less personal than "I guarantee that".
It is certain that
Impersonal construction emphasizing the inevitability of something.
I am convinced that
Indicates a strong belief, but not necessarily a guarantee of action.
I am sure that
Expresses a high degree of confidence, but with a slightly less formal tone than "I guarantee that".
FAQs
How to use "I guarantee that" in a sentence?
Use "I guarantee that" to express a strong assurance about something. For example, "I guarantee that you will love it" or "I guarantee that will change."
What can I say instead of "I guarantee that"?
You can use alternatives such as "I assure you that", "I promise you that", or "I'm certain that depending on the context.
When is it appropriate to use "I guarantee that"?
It is appropriate to use "I guarantee that" when you are confident in your ability to deliver a specific outcome or when you are absolutely sure about the truth of a statement. Use it when you want to convey certainty and instill confidence.
What is the difference between "I guarantee that" and "I hope that"?
"I guarantee that" expresses a firm assurance and certainty, while "I hope that" expresses a wish or expectation without any assurance of fulfillment. The former conveys confidence, whereas the latter conveys uncertainty.
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested