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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
Not compulsory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "Not compulsory" is correct and usable in written English.
It can be used to indicate that something is optional or not required. Example: "Attendance at the meeting is not compulsory, but we encourage everyone to join."
✓ Grammatically correct
News & Media
Academia
Encyclopedias
Alternative expressions(5)
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
"It's not compulsory.
News & Media
Education is not compulsory.
Encyclopedias
It is not compulsory.
News & Media
Military service is not compulsory.
Encyclopedias
Attendance is not compulsory.
News & Media
This is not compulsory arbitration.
Academia
These readings are not compulsory.
Academia
Taking part was not compulsory.
News & Media
The full Alexander McQueen is not compulsory.
News & Media
Generally, writing a dissertation is not compulsory.
News & Media
The previous three plebiscites were not compulsory.
News & Media
Expert writing Tips
Best practice
Consider your audience and context; while "not compulsory" is widely understood, alternatives like "optional" or "voluntary" may be more appropriate in certain situations.
Common error
Avoid using "not compulsory" when there is actually no choice involved. Ensure that the situation genuinely allows for an alternative; otherwise, using a more direct term like "prohibited" or "mandatory" would be more accurate.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not compulsory" functions as an adjective phrase, modifying a noun or pronoun to indicate that something is not required or mandatory. As confirmed by Ludwig AI, this phrase effectively conveys the concept of optionality.
Frequent in
News & Media
41%
Academia
15%
Encyclopedias
7%
Less common in
Science
7%
Wiki
2%
Formal & Business
2%
Ludwig's WRAP-UP
In summary, "not compulsory" is a grammatically correct and frequently used phrase that signifies something is optional. Ludwig AI confirms its acceptability. It is used across diverse contexts, especially in news, academia, and encyclopedias. When using "not compulsory", ensure the context genuinely involves a choice. While the phrase is generally neutral, you can adapt your choice based on the audience to match the level of formality desired using similar words like "optional" or "voluntary". Always aim for clarity to avoid confusion about available choices.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
Optional
A single word alternative, implying a choice is available.
Not required
A more direct and formal way of saying something is not obligatory.
Not mandatory
A more formal synonym for "not compulsory".
Voluntary
Suggests that participation is based on one's own free will.
Not obligatory
A formal way of saying something is not required by rule or law.
Discretionary
Implies the decision is left to someone's judgment.
Elective
Often used in educational contexts to describe optional courses or activities.
At your own discretion
Places the decision-making power entirely on the individual.
Permissible
Indicates that something is allowed but not demanded.
Up to you
An informal way of indicating that a decision is the responsibility of the listener.
FAQs
What does "not compulsory" mean?
The phrase "not compulsory" means something is optional and not required. It indicates there is a choice whether or not to participate or adhere to something.
What can I say instead of "not compulsory"?
You can use alternatives like "optional", "not required", or "voluntary" depending on the context.
Is "not compulsory" formal or informal?
How to use "not compulsory" in a sentence?
You can use "not compulsory" to indicate that attendance, participation, or adherence to something is optional. For example, "Attendance at the meeting is "not compulsory"."
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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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested