Used and loved by millions
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
a promise that
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a promise that" is correct and usable in written English.
You can use it when referring to a commitment or assurance made regarding a future action or event. Example: "She made a promise that she would always support him, no matter the circumstances."
✓ Grammatically correct
News & Media
Science
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
"It is a promise that was made...
News & Media
It was a promise that Redgrave broke.
News & Media
"We believe that's a promise that is unfulfilled," he said.
News & Media
A promise that is yet to be transformed into action.
News & Media
It is a promise that, as Powers reveals from the earliest pages, he will not keep.
News & Media
His sole symphony, rooted in Beethoven's architecture and Schubert's lyricism, shows a promise that went unfulfilled.
News & Media
And a promise that is articulated through pillars, one of which will "accelerate your ambition".
News & Media
Video holds a promise that goes beyond what static images and nuggets of text can offer.
News & Media
But this was a promise that was never kept.
News & Media
But this is a promise that can't be kept.
News & Media
"But Labour's plan is a promise that won't work.
News & Media
Expert writing Tips
Best practice
Use "a promise that" to set clear expectations and build trust with your audience, especially in formal communication.
Common error
Avoid using "a promise that" if the commitment is unrealistic or beyond your control, as this can damage credibility.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a promise that" functions as a noun phrase introducing a subordinate clause. It indicates a commitment or assurance regarding a future action or event. Ludwig examples confirm this usage, showing how it sets up expectations.
Frequent in
News & Media
78%
Science
11%
Encyclopedias
3%
Less common in
Wiki
2%
Formal & Business
2%
Social Media
1%
Ludwig's WRAP-UP
In summary, "a promise that" is a versatile phrase used to introduce a commitment or assurance. Ludwig AI identifies it as grammatically correct and frequently employed across various contexts, particularly in news and media. Alternatives like "an assurance that" or "a guarantee that" can provide nuanced variations. When using this phrase, ensure clarity and feasibility to maintain credibility. Avoiding overpromising is crucial. The phrase is suitable for both formal and informal communication, making it a valuable tool for effective expression.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
an assurance that
Replaces "promise" with "assurance", emphasizing a guarantee or certainty.
a guarantee that
Substitutes "promise" with "guarantee", highlighting a formal commitment.
a commitment that
Uses "commitment" instead of "promise", stressing dedication and responsibility.
an undertaking that
Replaces "promise" with "undertaking", suggesting a formal agreement.
an oath that
Substitutes "promise" with "oath", implying a solemn pledge.
a pledge that
Uses "pledge" instead of "promise", indicating a firm declaration.
a vow that
Replaces "promise" with "vow", suggesting a sacred commitment.
an agreement that
Substitutes "promise" with "agreement", focusing on a mutual understanding.
a declaration that
Uses "declaration" instead of "promise", stressing a formal statement.
a warranty that
Replaces "promise" with "warranty", implying a guarantee of quality or performance.
FAQs
How to use "a promise that" in a sentence?
You can use "a promise that" to introduce a commitment or assurance, for example, "The company made "a promise that" it would reduce emissions by 50% by 2030".
What can I say instead of "a promise that"?
You can use alternatives like "an assurance that", "a guarantee that", or "a commitment that" depending on the context. Each alternative emphasizes a slightly different aspect of the commitment.
Which is correct, "a promise that" or "a promise to"?
"A promise that" introduces a clause, while "a promise to" is followed by a verb. For example, "a promise that the work would be completed" versus "a promise to complete the work".
What's the difference between "a promise that" and "a guarantee that"?
"A promise that" is a general commitment, while "a guarantee that" implies a more formal and legally binding assurance. A guarantee typically offers recourse if the commitment is not fulfilled.
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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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested