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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
this is compulsory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "this is compulsory" is correct and usable in written English.
You can use it to indicate that something is required or mandatory in a specific context, such as rules, regulations, or instructions. Example: "Please note that attendance at the training session is compulsory for all employees."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
this is indispensable
this is guaranteed
this is duty
this is obligatory
this is requirement
this is mandated
this is voluntary
this is crucial
this is needed
this is desired
this is measured
this is a must
it is imperative
this is requested
this is compelling
this is issued
this is authorized
this is permitted
this is demanded
this is imperative
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
7 human-written examples
But there is no choice here: this is compulsory nationalisation.
News & Media
I don't understand how they work it out 'cos benefits are supposed to be the minimum you can live on and now they've said that this is compulsory.
News & Media
Founders keep 70% equity, with 3% going to advisors (this is compulsory) and 27% to HackFwd.
News & Media
This is compulsory, and failure to respect the specific requirements will result in penalties that are higher than the greening payments (125 % more).
This is compulsory and lasts twelve years: four years each of primary school, middle school and high school.
Wiki
All abortions, including spontaneous and induced abortions, e. g. induced abortions for medical reasons, are performed and registered by health care institutions and this is compulsory for all health care institutions providing abortion care, including all private health services.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
52 human-written examples
Some of this was compulsory, especially as he ran the last few hundred yards and hit the finish line.
News & Media
Only 31% of schools had a dedicated pain module and this was compulsory in only 18%, most of which were in France.
Science
This booklet is compulsory by Kenyan regulations and the main (clinical) data source used at all study sites.
Science
If this cysteine is compulsory for the formation of the zinc finger, the functional significance of this absence remains to be elucidated.
Science
This information is compulsory in Norway in all periodontal treatment or - follow-up sessions - if refund from The Norwegian Health Economics Administration HELFOO) is required.
Science
Expert writing Tips
Best practice
When using "this is compulsory", ensure the context clearly defines what "this" refers to, avoiding ambiguity for the reader.
Common error
Avoid using "this is compulsory" in casual conversations or informal writing. Opt for more relaxed alternatives like "you have to do this" or "this is a must" to maintain a natural tone.
Source & Trust
81%
Authority and reliability
4.3/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is compulsory" functions as an assertion of obligation. Ludwig AI affirms that it's grammatically sound, and it serves to declare that something is not optional but mandatory. The examples show its application across diverse contexts, highlighting its role in conveying requirements.
Frequent in
Science
29%
News & Media
29%
Wiki
14%
Less common in
Formal & Business
14%
Encyclopedias
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "this is compulsory" is a grammatically correct and usable expression to indicate something is required or mandatory. As Ludwig AI confirms, its usage is appropriate in various contexts, predominantly in Science, News & Media, and Wiki sources. While not extremely frequent, this phrase effectively conveys the necessity of an action or compliance with a rule. To enhance clarity, make sure to define precisely what "this" refers to and consider the level of formality when incorporating the term in your writing. In more informal circumstances, other phrases like "this is a must" may be more suited.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
this is mandatory
Replaces "compulsory" with "mandatory", a direct synonym with slightly more formal connotations.
this is required
Substitutes "compulsory" with "required", focusing on the necessity of the action or item.
this is obligatory
Employs "obligatory" instead of "compulsory", suggesting a moral or legal duty.
this is a must
Uses a more informal and emphatic expression to convey the essential nature of something.
this is non-negotiable
Highlights the inflexibility and unalterable nature of the requirement.
it is a requirement
Shifts the sentence structure to emphasize the noun "requirement" instead of the adjective "compulsory."
it is an obligation
Replaces "compulsory" with the noun "obligation", indicating a duty to fulfill.
it is essential
Focuses on the indispensable nature of something, rather than the forced compliance.
it is imperative
Uses "imperative" to stress the urgency and crucial importance of the matter.
compliance is necessary
Changes the structure to emphasize the act of compliance rather than the compulsory nature itself.
FAQs
What does "this is compulsory" mean?
The phrase "this is compulsory" means that something is required, mandatory, or obligatory. It indicates that there is no choice but to do or have something.
What can I say instead of "this is compulsory"?
You can use alternatives like "this is mandatory", "this is required", or "this is obligatory" depending on the formality of the context.
How formal is the phrase "this is compulsory"?
The phrase "this is compulsory" is relatively formal. In more casual settings, phrases like "this is a must" or "you have to do this" may be more appropriate.
Is there a difference between "this is compulsory" and "this is required"?
While both phrases indicate necessity, "this is compulsory" often implies a rule or external force making something mandatory, whereas ""this is required"" suggests a need or prerequisite.
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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
81%
Authority and reliability
4.3/5
Expert rating
Real-world application tested