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
this is a must
Grammar usage guide and real-world examplesUSAGE SUMMARY
'this is a must' is correct and usable in written English.
You might use it when describing something that is required or necessary. For example: "This safety training is a must for all new employees."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(20)
this is indispensable
this is guaranteed
this is a necessity
this is obligatory
this is requested
this is issued
this is authorized
this is compulsory
this is permitted
this is demanded
this is imperative
this is essential
this is vital
this is preferred
this was necessary
this is mandatory
this is necessary
this is crucial
it is a requirement
this is needed
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
37 human-written examples
If you have the Blaton Suite this is a must.
News & Media
"This is a must win in Game 4".
News & Media
"Mobility of people, this is a must," Mr. Miyazu said.
News & Media
Regulation of this is a must.
News & Media
"This is a must do," says Prof Sierks.
News & Media
Bring in XBox functionality – This is a must.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
21 human-written examples
"The players know this is a must-win game.
News & Media
"But our supporters believe this is a must-win game.
News & Media
For the Republican Party, this is a must-win race.
News & Media
For Burgundy lovers, this is a must-visit.
News & Media
This is a must-read for understanding the tech industry.
News & Media
Expert writing Tips
Best practice
Use "this is a must" to clearly convey the essential nature of an action, item, or idea. It adds emphasis and urgency to your recommendation.
Common error
Avoid using "this is a must" repeatedly in a short span. Overuse can diminish its impact and make your writing sound repetitive. Use synonyms or rephrase to maintain clarity and emphasis.
Source & Trust
77%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is a must" functions as an emphatic declaration of necessity or strong recommendation. Ludwig AI indicates its correctness in written English, frequently used to highlight something considered essential.
Frequent in
Wiki
35%
News & Media
32%
Science
12%
Less common in
Formal & Business
8%
Academia
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "this is a must" is a commonly used phrase to strongly recommend or emphasize the necessity of something. Ludwig AI confirms its correct usage in written English. While grammatically sound and widely understood, it's essential to avoid overuse and consider the context to maintain the impact of your writing. Consider using alternatives like "this is essential" or "this is crucial" to add variety and precision. Remember that this phrase works better in neutral to informal settings.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this is a necessity
Replaces 'a must' with 'a necessity', stating something is needed.
this is essential
Replaces 'a must' with 'essential', indicating something indispensable.
this is crucial
Substitutes 'a must' with 'crucial', emphasizing the critical nature of something.
this is vital
Uses 'vital' instead of 'a must', highlighting the importance for success or survival.
this is imperative
Replaces 'a must' with 'imperative', suggesting something is urgently necessary.
this is indispensable
Emphasizes the absolute necessity of something, making it impossible to do without.
this is mandatory
Indicates something is required by a rule or law.
this is obligatory
Similar to 'mandatory', suggesting a formal requirement or duty.
it is a requirement
Changes the structure to highlight that something is demanded or needed.
it's non-negotiable
Emphasizes that something cannot be argued against or changed.
FAQs
How can I use "this is a must" in a sentence?
You can use "this is a must" to emphasize the necessity of something, such as "For anyone visiting Rome, the Colosseum "this is a must"-see attraction".
What can I say instead of "this is a must"?
You can use alternatives like "this is essential", "this is crucial", or "this is imperative" depending on the context.
Is it okay to say "this is a must do"?
Yes, "this is a must do" is acceptable and commonly used, especially in informal contexts, to indicate something highly recommended or necessary. For example, "Visiting the Louvre "this is a must do" when you're in Paris".
What is the difference between "this is a must" and "this is necessary"?
While both phrases indicate importance, ""this is a must"" carries a stronger sense of recommendation and often implies a highly desirable or essential action, whereas "this is necessary" simply states that something is required.
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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
77%
Authority and reliability
4.1/5
Expert rating
Real-world application tested