Open and Optional

Open

Open adjective - Allowing passage without obstruction.

Optional and open are semantically related In some cases you can use "Optional" instead an adjective "Open".

Nearby Words: opening, openness, opened, opener

Optional

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

Open and optional are semantically related in voluntary topic. You can use "Open" instead an adjective "Optional", if it concerns topics such as possible.

Nearby Words: option, optionally

Mutual synonyms

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