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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
was not obligatory
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "was not obligatory" is correct and usable in written English.
It can be used to indicate that something was not required or mandatory in a particular context. Example: "Attendance at the meeting was not obligatory, but it was encouraged for those who could make it."
✓ Grammatically correct
Science
News & Media
Formal & Business
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
31 human-written examples
But the historical context was not obligatory in the curriculum.
News & Media
If asked, he explained that the full admission price was not obligatory.
News & Media
I was no expert, but many Muslim scholars said the full veil was not obligatory at all.
News & Media
It was not obligatory to reply to letters from readers who included a name and address but I generally did.
News & Media
But it was not obligatory, and developers just ignored it as they could make easy money from continuing with leases.
News & Media
Although paper submission was not obligatory for the participants of the meeting, nineteen manuscripts were submitted to this special issue and underwent a review and revision process with the help of two reviewers for every manuscript.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
29 human-written examples
The chador wasn't obligatory back then; Hindu women didn't wear it.
News & Media
It's not obligatory".
News & Media
Music is not obligatory.
News & Media
Rubbing noses is not obligatory.
News & Media
It's not obligatory, but it is expected".
News & Media
Expert writing Tips
Best practice
Use "was not obligatory" to clearly communicate that a particular action or item is not required, leaving room for choice or flexibility. It is suitable in formal and informal contexts.
Common error
Avoid using "was not obligatory" in extremely informal settings where simpler phrases like "didn't have to" or "wasn't needed" would be more appropriate. Adjust your language to suit the audience and situation.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "was not obligatory" primarily functions as a predicate adjective describing a subject. It indicates that a particular action, item, or characteristic was not required or mandatory. Ludwig AI confirms that the phrase is grammatically sound and commonly used.
Frequent in
Science
50%
News & Media
37%
Formal & Business
13%
Less common in
Ludwig's WRAP-UP
The phrase "was not obligatory" is a versatile expression used to indicate that something is not required or mandatory. Ludwig AI confirms that the expression is correct and usable in written English. It is commonly found in scientific, news, and formal business contexts, conveying the absence of a requirement. Alternatives include "was not required" and "was optional". When using this phrase, consider the context and audience to ensure the level of formality is appropriate, avoiding overly casual language in formal settings and vice versa.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
was not required
Replaces "obligatory" with "required", a direct synonym.
was not mandatory
Substitutes "obligatory" with "mandatory", emphasizing the lack of compulsion.
was not compulsory
Uses "compulsory" instead of "obligatory", indicating it wasn't enforced.
was not a requirement
Rephrases the sentence to use "requirement" as a noun.
was not essential
Indicates that something was not crucial or necessary.
was not necessary
Expresses that something was not needed.
was not a must
Uses a more informal expression to convey that something wasn't essential.
was optional
Short and simple replacement meaning not required.
was at one's discretion
Implies that the decision was left to someone's judgment.
was voluntary
Suggests the action was performed by free will
FAQs
What does "was not obligatory" mean?
The phrase "was not obligatory" means that something wasn't required or mandatory. It implies that there was no obligation to do something.
What can I say instead of "was not obligatory"?
You can use alternatives like "was not required", "was not mandatory", or "was optional" depending on the context.
How formal is the phrase "was not obligatory"?
The phrase "was not obligatory" is suitable for both formal and informal contexts, but it leans towards being slightly more formal. In very casual settings, phrases like "wasn't necessary" might be more appropriate.
Is it correct to say "wasn't obligatory"?
Yes, "wasn't obligatory" is a perfectly acceptable contraction of "was not obligatory". Both forms are grammatically correct and can be used interchangeably.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested