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 be required
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must be required" is correct and usable in written English.
You can use it to emphasize that something is necessary or obligatory. For example: "Any new employees must be required to complete a background check before starting the job."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(20)
is essential
is necessary
is mandatory
is obligatory
is compulsory
is imperative
is crucial
is indispensable
is paramount
must be incorporated
must be desired
must be reimbursed
must be guaranteed
must be involved
must be restricted
must be relied
must be preferred
must be permitted
must be acquired
must be authorized
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
Since no human being is allowed during the RH operations, a Multi-purpose Rescue Vehicle (must) must be required for providing support in site.
More must be required.
News & Media
Second, frequent, rigorous and intrusive inspections must be required.
News & Media
Slick moves and professional technique must be required.
News & Media
Annual inspections must be required for bridges with fatigue cracks or serious corrosion.
News & Media
Soldiers in battle must be required to respect the human rights of those that they fight.
News & Media
Illegal immigrants must be required to register, learn English and pay taxes — or face deportation.
News & Media
Now we're left at running the election, but leaders must be required.
News & Media
All lawmakers must be required to reveal the sources and amounts of their outside income.
News & Media
For engineering systems that require long service life, appropriate formulated polyolefin product must be required.
Many defendants in serious drug cases must be required to plead guilty before being placed in such a program.
News & Media
Expert writing Tips
Best practice
Use "must be required" when emphasizing a formal necessity or obligation, particularly in contexts like regulations, policies, or essential procedures.
Common error
Avoid using "must be required" in casual conversations or informal writing. Opt for simpler alternatives like "need to" or "have to" to maintain a natural tone.
Source & Trust
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must be required" functions as a modal construction expressing a strong obligation or necessity. As Ludwig AI explains, it emphasizes that something is not merely suggested but is essential or mandated, especially in formal contexts.
Frequent in
News & Media
53%
Science
28%
Academia
18%
Less common in
Formal & Business
1%
Wiki
1%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, the phrase "must be required" is a modal construction used to express a strong obligation or necessity, primarily in formal contexts such as news, science, and academia. Ludwig AI confirms its correctness and highlights its function in emphasizing mandatory actions. While grammatically sound and widely used, it's best to avoid this phrase in informal settings, opting for simpler alternatives. Recognized as very common across authoritative sources like The New York Times and The Guardian, understanding its appropriate usage is key to maintaining a professional and precise tone.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is mandatory
Implies a compulsory nature, similar to 'must be required' but more direct.
is obligatory
Indicates a binding requirement or duty, often in formal contexts.
is compulsory
Stresses the enforced nature of a requirement.
is imperative
Indicates that something is urgently necessary or demanded.
is necessary
Highlights the need for something, similar to 'must be required' but less forceful.
is crucial
Highlights the critical importance of something.
is essential
Emphasizes the importance or necessity of something without explicitly stating a requirement.
is a prerequisite
Indicates that something is a necessary condition that must be met beforehand.
is indispensable
Highlights that something is absolutely essential and cannot be done without.
is paramount
Emphasizes the supreme importance and necessity of something.
FAQs
How can I use "must be required" in a sentence?
Use "must be required" to indicate a formal necessity or obligation. For example, "All participants "must be required" to sign a waiver before the event."
What are some alternatives to "must be required"?
Alternatives include "is essential", "is necessary", or "is mandatory", depending on the context and level of formality you want to convey.
Is "must be required" too formal for everyday conversation?
Yes, "must be required" is generally too formal for everyday conversation. In informal settings, consider using phrases like "need to" or "have to".
What is the difference between "must be required" and "should be required"?
"Must be required" indicates a strict obligation, whereas "should be required" suggests a recommendation or advisability. The former is more forceful and implies a rule or regulation, while the latter is less stringent.
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
85%
Authority and reliability
4.6/5
Expert rating
Real-world application tested