Frivolous
Frivolous adjective - Lacking importance.
Optional and frivolous are semantically related. In some cases you can use "Optional" instead an adjective "Frivolous".
Nearby Words: frivolity, frivolously
Optional
Optional adjective - Subject to one's freedom of choice.
Frivolous and optional are semantically related. Sometimes you can use "Frivolous" instead an adjective "Optional".
Nearby Words: option, optionally
Mutual synonyms
Cite this Source
Optional and Frivolous. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/frivolous/optional
Frivolous & Optional. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/frivolous/optional>.
Optional or Frivolous. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/frivolous/optional.
Google Ngram Viewer shows how "frivolous" and "optional" have occurred on timeline