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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
not obligatory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "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
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 obligatory".
News & Media
Music is not obligatory.
News & Media
Rubbing noses is not obligatory.
News & Media
Bookings are recommended but not obligatory.
News & Media
It's not obligatory, but it is expected".
News & Media
But the historical context was not obligatory in the curriculum.
News & Media
And yet, and yet... "liking Shakespeare is not obligatory".
News & Media
But they are not obligatory for other tournaments, only recommended.
News & Media
If asked, he explained that the full admission price was not obligatory.
News & Media
Vodka is not obligatory; shamans use everything from black tea to a fermented milk called tarasun.
News & Media
With traditional – if not obligatory – British self-deprecation, he's downplayed the artsiness of his upbringing.
News & Media
Expert writing Tips
Best practice
Use "not obligatory" to clearly communicate that an action or choice is optional, not mandatory. This helps avoid confusion and empowers individuals to make informed decisions.
Common error
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not obligatory" functions as an adjective phrase, modifying a noun to indicate that something is not required. It serves to clarify the status of a requirement or duty. According to Ludwig AI, this phrase is grammatically correct.
Frequent in
Science
32%
News & Media
31%
Encyclopedias
2%
Less common in
Wiki
2%
Formal & Business
2%
Reference
0%
Ludwig's WRAP-UP
The phrase "not obligatory" is a grammatically sound and frequently used expression to indicate that something is optional, not required. According to Ludwig, it serves to clarify that a particular action or condition is discretionary. Appearing across various sources—particularly in science, news, and encyclopedias—the phrase is commonly used in neutral to formal contexts where clarity is important. For more informal communication, one may consider using "optional" or "not required". Ultimately, using "not obligatory" effectively involves understanding the context and ensuring it accurately conveys the intended degree of choice.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
not required
Emphasizes the absence of a requirement; a direct synonym for "not obligatory".
optional
Highlights the choice involved; focuses on the freedom to choose.
not mandatory
Stresses that it's not compulsory or enforced.
voluntary
Implies acting out of one's own free will.
not compulsory
Indicates it's not legally or officially required.
discretionary
Suggests that it's up to someone's judgment or decision.
permissive
Highlights that something is allowed, but not enforced.
not essential
Focuses on the lack of necessity for something.
not a must
Informal way of saying it's not necessary or essential.
at your option
Emphasizes the choice is entirely up to the person.
FAQs
What does "not obligatory" mean?
The phrase "not obligatory" means something is not required or mandatory. It is "optional" and can be done at one's own discretion.
How can I use "not obligatory" in a sentence?
You can use "not obligatory" to indicate that an action or decision is "not required". For example, "While registration is recommended, it is "not obligatory"".
Which is correct, "not obligatory" or "non-obligatory"?
"Not obligatory" is more common and generally preferred. "Non-obligatory" is also correct but less frequently used. Consider using "optional" or "not required" for simpler phrasing.
What are some alternatives to "not obligatory"?
Alternatives to "not obligatory" include "optional", "not required", "voluntary", and "discretionary". The best choice depends on the specific context.
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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
4.5/5
Expert rating
Real-world application tested