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
must ensure
Grammar usage guide and real-world examplesUSAGE SUMMARY
"must ensure" is a correct and usable phrase in written English.
It is usually used to express the need for someone to take responsibility for a certain situation. For example: "The manager must ensure that the team meets the deadline".
✓ Grammatically correct
News & Media
Science
Formal & Business
Alternative expressions(5)
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
We must ensure that they are treated.
News & Media
The Caribbean people must ensure that:1.
News & Media
"We must ensure that justice is done".
News & Media
Managers must ensure that things run smoothly.
News & Media
MPs must ensure that does not happen.
News & Media
These are rights we must ensure for ourselves.
News & Media
President Bush must ensure that that does not happen.
News & Media
"He must ensure that he can trust in his coalition".
News & Media
Schools must ensure pupils on their register are attending.
News & Media
We must ensure that limited resource is targeted appropriately".
News & Media
We must ensure that it is open to all.
News & Media
Expert writing Tips
Best practice
In formal writing, follow "must ensure" with a specific and measurable action to demonstrate how the assurance will be achieved.
Common error
Avoid using "must ensure" when the outcome is not entirely within your control. If external factors significantly impact the result, consider using phrases like "should aim to ensure" or "strive to ensure" instead.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must ensure" functions as a deontic modal, expressing a strong obligation or necessity. It indicates that a particular action or outcome is required and that someone is responsible for guaranteeing it. Ludwig AI, in its analysis, confirms the common use of this phrase across various domains.
Frequent in
News & Media
45%
Formal & Business
25%
Science
20%
Less common in
Encyclopedias
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "must ensure" is a versatile and frequently used expression to denote a strong obligation or necessity, carrying a significant weight of responsibility. Ludwig AI confirms its grammatical correctness and widespread application across various domains such as news, business, and science. To enhance clarity and avoid ambiguity, it is recommended to specify the responsible party and the actions required. While generally suitable for formal and neutral registers, consider the context and potential for overstatement when using this phrase. Alternatives like "need to guarantee" or "have to make certain" can offer subtle variations in meaning and tone.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
need to guarantee
This alternative uses "need to" to express necessity and "guarantee" to emphasize certainty.
guarantee the following
This version focuses directly on the act of guaranteeing as a responsibility.
have to make certain
This option replaces "must ensure" with "have to make certain", conveying a similar level of obligation.
it's crucial to guarantee
Substitutes "must" with "it's crucial", emphasizing the importance of ensuring something.
it is imperative to guarantee
Uses "imperative" to heighten the sense of urgency and obligation compared to the original phrase.
it is vital to make sure
This phrase uses "vital" to stress the importance of the action, replacing "ensure" with the more common "make sure".
take the necessary steps to guarantee
This alternative emphasizes the actions needed to achieve assurance, adding a proactive element.
we are obliged to guarantee
Replaces "must" with "are obliged", making the statement more formal.
it is our responsibility to make certain
Highlights the duty to ensure, framing it as a matter of responsibility.
ascertain with certainty
This option replaces "ensure" with "ascertain with certainty", highlighting the need for verified confirmation.
FAQs
How do I use "must ensure" in a sentence?
Use "must ensure" to express a strong obligation or necessity to guarantee a specific outcome. For example, "The government "must ensure" that all citizens have access to healthcare".
What are some alternatives to "must ensure"?
Alternatives include phrases like "need to guarantee", "have to make certain", or "it is crucial to guarantee". The best choice depends on the specific context and desired level of formality. See a list of alternatives "here".
Is "must ensure" formal or informal?
"Must ensure" is suitable for both formal and neutral contexts. In highly informal settings, you might opt for more casual alternatives like "gotta make sure".
What's the difference between "must ensure" and "should ensure"?
"Must ensure" implies a higher degree of certainty and obligation compared to "should ensure". "Must ensure" suggests a non-negotiable requirement, while "should ensure" indicates a recommended course of action. The alternative is more flexible and less prescriptive.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
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