Implausible
Implausible adjective - Too extraordinary or improbable to believe.
Optional and implausible are semantically related. In some cases you can use "Optional" instead an adjective "Implausible".
Nearby Word: implausibly
Optional
Optional adjective - Subject to one's freedom of choice.
Implausible and optional are semantically related. Sometimes you can use "Implausible" instead an adjective "Optional".
Nearby Words: option, optionally
Mutual synonyms
Cite this Source
Optional and Implausible. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/implausible/optional
Implausible & Optional. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/implausible/optional>.
Optional or Implausible. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/implausible/optional.
Google Ngram Viewer shows how "implausible" and "optional" have occurred on timeline