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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
must required
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "must required" is not correct in written English.
The word "must" already implies necessity, making "required" redundant. Example: "You must submit your application by the deadline."
⚠ May contain grammatical issues
News & Media
Science
Encyclopedias
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
1 human-written examples
The region suffers meltingly hot summers and bitterly cold winters, conditions that produce small, thick-skinned grapes: the main varieties are touriga nacional, touriga franca and tinta barroca, producing the dense concentrated must required.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
For example, all sections must meet the requirements for a "writing-intensive" class, and thus must require at least 12 pages of revised text.
Science
Now, the club must require significant change.
News & Media
John McCarthy noted that her work must require a certain anger.
News & Media
To fuel this leap must require a fund of psychic energy beyond the average capacity.
News & Media
Surely something so ubiquitous yet invisible must require deep technical sophistication to understand.
News & Media
It must require a lot of attention, though, doesn't it?
News & Media
Rees said: "Success must require genuine breakthroughs but be credibly achieved within five years".
News & Media
Public policy must require individualized high school educational plans, including the option of skipping 12th grade.
News & Media
Still, reinventing himself and shedding people who've been at his side for years must require utter ruthlessness.
News & Media
Whatever our solution to this aspect of the terrorist crisis, we must require insurers to pay their fair share".
News & Media
Expert writing Tips
Best practice
Avoid using both "must" and "required" together, as "must" already implies a requirement. Choose either "must" followed by a verb or "is required to" for clarity.
Common error
Avoid redundancy by recognizing that "must" is a modal verb already indicating necessity. Using "required" after "must" creates an unnecessary double emphasis and weakens your writing. Prefer concise alternatives.
Source & Trust
88%
Authority and reliability
2.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "must required" attempts to function as an expression of obligation or necessity. However, due to the redundant use of both the modal verb "must" and the adjective "required", Ludwig AI indicates that the phrase is grammatically incorrect.
Frequent in
News & Media
30%
Science
25%
Encyclopedias
20%
Less common in
Formal & Business
10%
Reference
8%
Wiki
7%
Ludwig's WRAP-UP
In summary, while the phrase "must required" might seem like a straightforward way to express necessity, it suffers from grammatical redundancy. As Ludwig AI highlights, the modal verb "must" inherently conveys the sense of requirement, making the addition of "required" unnecessary and incorrect. For clearer and more effective writing, opt for either "must" followed by a verb or use alternative constructions like "is required". Remember that in formal contexts, alternatives like "is necessary" or "it is imperative" may be more appropriate. The key takeaway is to avoid redundancy and prioritize clarity in your writing.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
is required
Replaces the modal verb "must" with a passive voice construction expressing requirement.
has to be
Employs a semi-modal verb construction to convey necessity.
is necessary
Uses a descriptive adjective instead of a modal verb to indicate something is needed.
needs to be
Uses a verb expressing need, similar to 'is required' but slightly less formal.
is essential
Indicates something is vitally important, often implying a requirement.
is mandatory
Replaces 'required' with a synonym denoting that something is compulsory.
is obligatory
Substitutes with a more formal adjective to express mandatory nature.
it is imperative
Emphasizes the urgency and importance of the need.
demands
Uses a verb to convey that something necessitates a specific action or condition.
calls for
Suggests a need for a particular action or quality.
FAQs
What's wrong with using "must required"?
The word "must" already expresses necessity. Adding "required" makes the phrase redundant. It's like saying something is "very very important" instead of just "very important".
How can I correctly use "must" to express requirement?
Use "must" followed directly by a verb. For example, instead of "You must required to submit", say "You "must submit" your application."
What can I use instead of "must required" to sound more formal?
For a more formal tone, use phrases like "is "is required"", "is "is necessary"", or "it is "is imperative"" depending on the specific meaning you want to convey.
Is there a subtle difference in meaning between "must" and "is required to"?
"Must" often implies a personal obligation or internal rule, while "is required to" suggests an external rule or regulation. For example, "I must finish this report" versus "Employees are required to attend the training".
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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
88%
Authority and reliability
2.8/5
Expert rating
Real-world application tested