Nonobligatory and Optional

Nonobligatory

Nonobligatory adjective - Not required by rule or law.
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Synonyms for Nonobligatory

Optional and nonobligatory are semantically related in open to choice topic. In some cases you can use "Optional" instead an adjective "Nonobligatory", when it comes to topics like able to be chosen.

Optional

Optional adjective - Possible but not necessary; left to personal choice.

Nonobligatory and optional are semantically related in possible topic. You can use "Nonobligatory" instead an adjective "Optional". popular alternative

Nearby Words: option, optionally
Cite this Source
Optional and Nonobligatory. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/nonobligatory/optional
Nonobligatory & Optional. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/nonobligatory/optional>.
Optional or Nonobligatory. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/nonobligatory/optional.
Google Ngram Viewer shows how "nonobligatory" and "optional" have occurred on timeline