Plain
Plain adjective - Free from all additions or embellishment.
Questionless and plain are semantically related. In some cases you can use "Questionless" instead an adjective "Plain".
Questionless
Plain and questionless are semantically related. Sometimes you can use "Plain" instead an adjective "Questionless".
Mutual synonyms
Cite this Source
Questionless and Plain. (2016). Retrieved 2026, August 12, from https://thesaurus.plus/related/plain/questionless
Plain & Questionless. N.p., 2016. Web. 12 Aug. 2026. <https://thesaurus.plus/related/plain/questionless>.
Questionless or Plain. 2016. Accessed August 12, 2026. https://thesaurus.plus/related/plain/questionless.
Google Ngram Viewer shows how "plain" and "questionless" have occurred on timeline