Indubitable
Indubitable adjective - Not capable of being challenged or proved wrong.
Plain and indubitable are semantically related. In some cases you can use "Plain" instead an adjective "Indubitable".
Nearby Word: indubitably
Plain
Plain adjective - Free from all additions or embellishment.
Indubitable and plain are semantically related. Sometimes you can use "Indubitable" instead an adjective "Plain".
Mutual synonyms
Cite this Source
Plain and Indubitable. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/indubitable/plain
Indubitable & Plain. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/indubitable/plain>.
Plain or Indubitable. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/indubitable/plain.
Google Ngram Viewer shows how "indubitable" and "plain" have occurred on timeline