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

The Opposite(Antonym) of “nonmandatory”

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

Explore all Antonyms of “nonmandatory”

Definitions and Examples of mandatory, compulsory, obligatory

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

Required by law or rules; compulsory.


Wearing a helmet is mandatory when riding a motorcycle in this state.

Required by authority or circumstances; obligatory.


All students must take the compulsory courses before they can graduate.

Mandated by a sense of duty or moral obligation; required.


It is obligatory to report any suspicious activity to the authorities.

Key Differences: mandatory vs compulsory vs obligatory

  • 1Mandatory implies that something is required by law or rules, and failure to comply may result in legal consequences.
  • 2Compulsory suggests that something is required by authority or circumstances, and there may be penalties for noncompliance.
  • 3Obligatory conveys a sense of duty or moral obligation, and the consequences of noncompliance may be internal or external.

Effective Usage of mandatory, compulsory, obligatory

  • 1Legal Documents: Use mandatory to describe requirements that are legally binding.
  • 2Education: Use compulsory to describe courses or activities that are required for graduation.
  • 3Social Norms: Use obligatory to describe actions that are expected or required by social norms or moral codes.

Remember this!

The antonyms of nonmandatory have different levels of force or obligation. Mandatory is required by law or rules, compulsory is required by authority or circumstances, and obligatory is required by a sense of duty or moral obligation. Use these words in legal documents, education, and social norms to convey the appropriate level of requirement or obligation.

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