Optional and Peremptory

Optional

Optional adjective - Subject to one's freedom of choice.

Peremptory is an antonym for optional.

Nearby Words: option, optionally

Peremptory

Peremptory adjective - Forcing one's compliance or participation by or as if by law.
Usage example: a peremptory summons to appear before the committee

Optional is an antonym for peremptory.
Cite this Source
Peremptory and Optional. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/optional/peremptory
Optional & Peremptory. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/optional/peremptory>.
Peremptory or Optional. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/optional/peremptory.
Google Ngram Viewer shows how "optional" and "peremptory" have occurred on timeline