Synonyms of nonobligatory

14 similar words · 10 opposite words

Another word for nonobligatory is optional. Other synonyms of nonobligatory are facultative, nonobligate, nonrequisite, discretionary and free. The opposite of nonobligatory is requisite.

Synonyms and similar words for nonobligatory

discretionaryAvailable at one's discretion; able to be used as one chooses; left to or regulated by one's own discretion or judgment.
elective
facultativeNot obligate; optional, discretionary or elective.
free
noncompulsoryNot compulsory.
nonmandatoryNot mandatory.
nonobligateNot obligate.
nonrequiredNot required.
nonrequisiteNot requisite.
optionalNot compulsory; left to personal choice; elective.
optionaryOptional.
unrequiredNot required.
volitional
voluntary

basic
essential
indispensable
necessarNecessary.
necessary
necessitous
neededNecessary; being required.
prerequisiteRequired as a prior condition of something else; necessary or indispensable.
requiredNecessary; obligatory; mandatory.
requisiteEssential, indispensable, required.

What is another word for nonobligatory?: Nonobligatory has 14 synonyms on Word.ws, such as optional, facultative, nonobligate, nonrequisite, discretionary and free.
What is the opposite of nonobligatory?: The opposite of nonobligatory is requisite. Other antonyms of nonobligatory are needed, required, prerequisite, necessary and basic.
What does nonobligatory mean?: Nonobligatory means not obligatory.

Adapted from Wiktionary: nonobligatory (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Cite this page: “Synonyms of nonobligatory.” Word.ws, https://word.ws/synonyms/nonobligatory. Based on Wiktionary, CC BY-SA 4.0.