Optional and Voluntary

Optional

Optional adjective - Subject to one's freedom of choice.
Usage example: at the resort all recreational activities are optional, and you may choose to participate in none of them

Voluntary is a synonym for optional in possible topic. In some cases you can use "Voluntary" instead an adjective "Optional". popular alternative

Nearby Words: option, optionally

Voluntary

Voluntary adjective - Done, made, or given with one's own free will.
Usage example: a voluntary contribution to the school's fund-raising drive

Optional is a synonym for voluntary in willing topic. You can use "Optional" instead an adjective "Voluntary". popular alternative

Cite this Source
Voluntary and Optional. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/optional/voluntary
Optional & Voluntary. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/optional/voluntary>.
Voluntary or Optional. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/optional/voluntary.
Google Ngram Viewer shows how "optional" and "voluntary" have occurred on timeline