What is the Opposite(Antonym) of “nonobligatory”?

The Opposite(Antonym) of “nonobligatory”

The antonyms of nonobligatory are obligatory, mandatory, and compulsory. These words describe something that is required or necessary to do, but with different levels of obligation.

Explore all Antonyms of “nonobligatory”

Definitions and Examples of obligatory, mandatory, compulsory

Learn when and how to use these words with these examples!

Required by law, rule, or duty; mandatory.


Wearing a seatbelt while driving is an obligatory safety measure.

Required by law or rule; compulsory.


All employees must attend the mandatory training session next week.

Required by authority; mandatory.


Military service is compulsory in some countries.

Key Differences: obligatory vs mandatory vs compulsory

  • 1Obligatory implies a legal or moral requirement that must be fulfilled.
  • 2Mandatory suggests a requirement that must be followed according to a rule or policy.
  • 3Compulsory indicates a requirement that is enforced by authority.

Effective Usage of obligatory, mandatory, compulsory

  • 1Legal Documents: Use obligatory to describe legal requirements in contracts, agreements, and policies.
  • 2Education: Use mandatory to describe required courses, assignments, and exams.
  • 3Government: Use compulsory to describe laws and regulations that require citizens to do something.

Remember this!

The antonyms of nonobligatory have different levels of obligation. Obligatory implies a legal or moral requirement, mandatory suggests a requirement according to a rule or policy, and compulsory indicates a requirement enforced by authority. Use these words in legal documents, education, and government contexts.

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