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
that assures
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "that assures" is correct and usable in written English.
You can use it when you want to indicate that something provides certainty or guarantees a particular outcome. Example: "The new policy that assures employee safety has been implemented across all departments."
✓ Grammatically correct
News & Media
Science
Formal & Business
Academia
Wiki
Alternative expressions(20)
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
This is something that assures us some income".
News & Media
Sign a contract that assures your company's viability.
Academia
The kind that assures kids that they're necessary cogs in their family machine.
News & Media
"It is not an overriding endorsement that assures you of success".
News & Media
It is the inhomogeneity, rather than residual stress, that assures uniform circumferential stresses.
The target reliability is a design constraint that assures the required safety level for structures.
Science
A novel resetting scheme is proposed that assures validity of the control input.
Science
Father O'Donnell said it is a ritual that assures the documents are authentic.
News & Media
"What you need is a kind of process that assures four things," he said.
News & Media
More specifically, it seeks methods that assures a proper schedule by decision planning.
Science
And there's a whole subgenre of nonfiction that assures us that we shouldn't be spooked by how uneducated we are.
News & Media
Expert writing Tips
Best practice
When using "that assures", verify that the subject and verb agree in number to maintain grammatical correctness and clarity in your writing.
Common error
Avoid using "that assures" when the condition or action does not truly guarantee the intended outcome. Overstating the level of certainty can undermine your credibility.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "that assures" functions as a relative clause modifying a noun. It specifies a characteristic or quality of the noun that provides a sense of certainty or guarantee. Ludwig AI validates this usage as correct and applicable in various contexts.
Frequent in
News & Media
31%
Science
44%
Formal & Business
7%
Less common in
Academia
5%
Wiki
3%
Social Media
0%
Ludwig's WRAP-UP
The phrase "that assures" is a versatile relative clause used to convey certainty and guarantee in various contexts. As indicated by Ludwig AI, its grammatical correctness and diverse applicability make it a valuable tool in both formal and informal writing. While highly prevalent in scientific and news media sources, "that assures" can be substituted with alternatives like "that guarantees" or "that ensures" to add nuanced meaning. Remember to use it when you aim to instill confidence that a condition or mechanism will reliably produce a predictable and favorable result. Be aware of overstating the guarantee if the context doesn't warrant it.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that guarantees
Emphasizes a stronger, more definitive promise.
that ensures
Focuses on making certain that a specific result occurs.
that secures
Highlights the act of protecting and making something safe or certain.
that confirms
Stresses the validation or verification of something.
that establishes
Implies setting up a condition that leads to a guaranteed outcome.
that provides
Indicates a provision or offering of something beneficial and certain.
that warrants
Suggests justification or authorization, leading to confidence in the outcome.
that validates
Focuses on proving the truth or accuracy of something.
that certifies
Emphasizes formal approval or authentication, implying certainty.
that underwrites
Highlights financial backing or support, ensuring the viability of something.
FAQs
How can I use "that assures" in a sentence?
Use "that assures" to indicate that something guarantees or makes certain a particular outcome. For example, "The new policy "that assures employee safety" has been implemented."
What can I say instead of "that assures"?
You can use alternatives like "that guarantees", "that ensures", or "that secures" depending on the context.
Which is correct, "that assures" or "that ensures"?
Both "that assures" and "that ensures" are grammatically correct and often interchangeable. However, "that assures" tends to convey a stronger sense of certainty than "that ensures".
What's the difference between "that assures" and "that confirms"?
"That assures" implies a guarantee or certainty, while "that confirms" means to verify or validate something. The former provides certainty; the latter provides verification.
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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