Not obligatory

USAGE 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 appreciated."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

It's not obligatory".

The Guardian

Music is not obligatory.

The Guardian

Rubbing noses is not obligatory.

The Guardian - Travel

Bookings are recommended but not obligatory.

The Guardian - Travel

It's not obligatory, but it is expected".

The New York Times - Travel

But the historical context was not obligatory in the curriculum.

The Guardian - Opinion

And yet, and yet... "liking Shakespeare is not obligatory".

The Guardian - Books

But they are not obligatory for other tournaments, only recommended.

The Guardian - Sport

If asked, he explained that the full admission price was not obligatory.

The New York Times - Arts

Vodka is not obligatory; shamans use everything from black tea to a fermented milk called tarasun.

The New York Times

With traditional – if not obligatory – British self-deprecation, he's downplayed the artsiness of his upbringing.

The Guardian

Expert writing Tips

Best practice

When using "not obligatory", ensure the context clearly indicates what is optional and why. This avoids confusion and ensures your message is easily understood.

Common error

Avoid using "not obligatory" in very informal settings. While grammatically correct, it may sound overly formal or stilted in casual conversations. Opt for simpler alternatives like "optional" or "up to you" in such contexts.

Linguistic Context

The phrase "not obligatory" functions as an adjective phrase, modifying a noun or pronoun to indicate that something is not required or mandatory. Ludwig AI confirms its usability and grammatical correctness.

Expression frequency: Very common

Frequent in

Science

30%

News & Media

40%

Formal & Business

10%

Less common in

Encyclopedias

1%

Wiki

1%

Social Media

0%

Ludwig's WRAP-UP

In summary, "not obligatory" is a grammatically correct and frequently used phrase to indicate that something is optional or not required. As Ludwig AI confirms, it is suitable for various professional or neutral contexts, particularly in news, scientific, and formal communications. While "optional" is a simpler alternative, "not obligatory" provides a slightly more formal tone. When using this phrase, ensure clarity about what is optional and consider the context's formality to avoid sounding stilted. The phrase is versatile and well-understood, making it a reliable choice for conveying a lack of compulsion.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

optional

Single word alternative with slightly less formal tone.

not required

More direct and commonly used alternative, suitable for various contexts.

not mandatory

More formal and emphasizes the lack of compulsion.

not compulsory

Similar to "not mandatory", commonly used in British English.

voluntary

Suggests a choice made willingly, emphasizing the freedom to choose.

discretionary

Indicates that something is left to someone's judgment or choice.

at one's discretion

Indicates freedom to decide; more verbose.

elective

Often used in academic or medical contexts to describe a choice.

permissive

Focuses on allowing something without requiring it.

up to you

Informal alternative placing the decision on the listener.

FAQs

How can I use "not obligatory" in a sentence?

You can use "not obligatory" to indicate that something is optional or not required. For example: "Attending the meeting is "not obligatory", but it is highly recommended".

What's the difference between "not obligatory" and "optional"?

"Not obligatory" and "optional" are very similar. "Not obligatory" can sound slightly more formal, while "optional" is more commonly used in everyday language.

What are some alternatives to "not obligatory"?

Alternatives to "not obligatory" include "not required", "voluntary", "discretionary", and "not mandatory". The best choice depends on the specific context and desired level of formality.

Is it better to use "not obligatory" or "not compulsory"?

"Not obligatory" and "not compulsory" are largely interchangeable, but "not compulsory" is more common in British English, while "not obligatory" is used more broadly.