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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
are a must
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are a must" is grammatically correct and can be used in written English.
You can use it when describing something that is essential or compulsory. For example: "Good communication skills are a must in the workplace."
✓ Grammatically correct
News & Media
Wiki
Alternative expressions(20)
will be assembled
will be interrogated
is deserved
is predicated
needs refinement
deserves to be done
are vital
will be reinvigorated
is required to be done
ought to be done
is needed
will be accelerated
benefits needed
will be desired
has to be executed
is essential
will be understood
are indispensable
needs to be done
is engendered
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
58 human-written examples
Reservations are a must.
News & Media
economists — are a must.
News & Media
"So condoms are a must".
News & Media
Grilled chicken and fish are a must.
News & Media
In winter, reservations are a must.
News & Media
Treats are a must on steamy days.
News & Media
Advance reservations are a must.
News & Media
Good RF engineering techniques are a must".
News & Media
Tissues are a must.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
2 human-written examples
And fairy lights are a must-have.
News & Media
Mirrors are a must-have!
Wiki
Expert writing Tips
Best practice
When emphasizing the importance of something, use "are a must" to clearly communicate its essential nature. For example, "Strong research skills are a must for any successful academic."
Common error
While "are a must" is effective, avoid overuse in a single piece of writing. Vary your language with synonyms like "essential", "required", or "vital" to maintain reader engagement.
Source & Trust
75%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are a must" functions as a predicate adjective, emphasizing the necessity or essential quality of the subject. Ludwig AI confirms its grammatical correctness. The examples illustrate its use in various contexts, highlighting its role in conveying importance.
Frequent in
Wiki
54%
News & Media
42%
Science
4%
Less common in
Formal & Business
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are a must" is a grammatically sound and commonly used way to express that something is essential or required. Ludwig AI validates this. While it appears most frequently in Wiki and News & Media content, making it generally neutral in tone, writers should be mindful of the potential for overuse and consider employing synonyms like "are essential" or "are required" to maintain variety. When writing, ensure that the subject is plural to match the verb "are". Ultimately, "are a must" is a useful phrase for clearly communicating the necessity of something.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
are essential
Replaces "a must" with "essential", maintaining the meaning of being absolutely necessary.
are required
Substitutes "a must" with "required", focusing on the obligatory aspect.
are vital
Emphasizes the importance of something by using "vital" instead of "a must".
are indispensable
Highlights that something cannot be done without, similar to being a must.
are crucial
Replaces the phrase with "crucial" to underline the critical importance.
are obligatory
Focuses on the mandatory nature of something, comparable to being a must.
are imperative
Replaces with "imperative" to stress the urgency and necessity.
are non-negotiable
Highlights that something cannot be compromised on, much like being a must.
are a necessity
Replaces "a must" with "a necessity" making it a noun phrase.
cannot be skipped
Expresses the idea that something is a must by stating it "cannot be skipped."
FAQs
How can I use "are a must" in a sentence?
Use "are a must" to emphasize that something is essential or necessary. For example, "Valid passport and visa "are a must" for international travel."
What are some alternatives to "are a must"?
You can use alternatives such as "are essential", "are required", or "are vital" depending on the specific context.
Is it more formal to say "are essential" instead of "are a must"?
While both phrases convey necessity, "are essential" might be perceived as slightly more formal than "are a must", which is more common in general usage.
When should I use "are a must" instead of "is a must"?
Use "are a must" when referring to plural subjects. For example, "Comfortable shoes "are a must" for a walking tour". Use "is a must" for singular subjects.
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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
75%
Authority and reliability
4.1/5
Expert rating
Real-world application tested