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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
is not obligatory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is not obligatory" is correct and usable in written English.
It can be used to indicate that something is not required or mandatory. Example: "Participation in the survey is not obligatory, but your feedback would be greatly appreciated."
✓ Grammatically correct
News & Media
Science
Encyclopedias
Alternative expressions(20)
does not involve
does not required
do not need
is not histrionic
is not mandatory
is not merited
is not judgemental
is not imperative
is not obliged
does not presuppose
does not desire
is not a prerequisite
is not coercive
does not term
does not insist
does not enforce
is not a must
does not provide
does not call
is not necessary
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
Music is not obligatory.
News & Media
Rubbing noses is not obligatory.
News & Media
And yet, and yet... "liking Shakespeare is not obligatory".
News & Media
Vodka is not obligatory; shamans use everything from black tea to a fermented milk called tarasun.
News & Media
Public shaming is not obligatory — no pillory, no stocks, no scarlet P for pot.
News & Media
4. Talking about dying is not obligatory - some people and cultures shy away from it.
News & Media
Generally, the burgomaster is a member of the elected council, but this is not obligatory.
Encyclopedias
8. Remember, it is not obligatory to cook meat at your barbecue.
News & Media
"Bases and barracks have all been reduced and it is not obligatory to serve.
News & Media
Unless you're a social media manager or something similar for your actual job, participation is not obligatory.
News & Media
But compliance with those guidelines is not obligatory, and genetic testing practices vary widely across the United States.
News & Media
Expert writing Tips
Best practice
When clarifying guidelines or rules, use "is not obligatory" to clearly state that a specific action or requirement is not mandatory, allowing for flexibility or alternative approaches. For instance, "While pre-registration is encouraged, it "is not obligatory".
Common error
Avoid assuming that because something "is not obligatory", it is therefore forbidden. "Is not obligatory" simply means it's optional, whereas prohibition implies it is disallowed. Maintain clarity to prevent misunderstandings.
Source & Trust
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is not obligatory" primarily functions as a qualifier, indicating that something is not a mandatory requirement. Ludwig AI confirms its grammatical correctness and usability.
Frequent in
News & Media
34%
Science
57%
Encyclopedias
2%
Less common in
Formal & Business
2%
Wiki
1%
Social Media
0%
Ludwig's WRAP-UP
In summary, the phrase "is not obligatory" functions as a qualifier, indicating the absence of a mandatory requirement. Ludwig AI confirms that it is grammatically correct and widely used across various domains. This expression is commonly found in News & Media and Scientific publications, as well as encyclopedias, and conveys that an action or decision is optional rather than compulsory. Related phrases such as "is not required" and "is not mandatory" offer similar meanings, and it is important to distinguish "is not obligatory" from "is prohibited" to avoid misinterpretations.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is not required
Indicates a lack of necessity or compulsion.
is not mandatory
Highlights the absence of a compulsory aspect.
is not compulsory
Emphasizes that something is not enforced.
is not essential
Focuses on the non-essential nature of something.
is not necessary
Underscores the lack of need for something.
is not imperative
Stresses that something is not critically important.
is not binding
Implies a lack of legal or moral obligation.
is not demanded
Highlights that something is not explicitly requested or required.
is not a must
Indicates that something is optional and not a prerequisite.
is optional
Directly states that something is a choice and not a requirement.
FAQs
What does "is not obligatory" mean?
The phrase "is not obligatory" means that something is not required or mandatory. It implies a degree of freedom or choice, suggesting that while it may be an option, there's no compulsion to do it.
How can I use "is not obligatory" in a sentence?
You can use "is not obligatory" to indicate that a particular action, step, or requirement is optional. For example: "Although a reservation is recommended, it "is not obligatory".
What are some alternatives to "is not obligatory"?
Alternatives to "is not obligatory" include "is not required", "is not mandatory", "is not compulsory", "is optional", and "is not necessary".
Is there a difference between "is not obligatory" and "is prohibited"?
Yes, these phrases have opposite meanings. "Is not obligatory" means something is optional, while "is prohibited" means something is forbidden or not allowed.
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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
84%
Authority and reliability
4.6/5
Expert rating
Real-world application tested