Plain
Plain adjective - Free from all additions or embellishment.
Undiminished and plain are semantically related. In some cases you can use "Undiminished" instead an adjective "Plain".
Undiminished
Undiminished adjective - Not lessened or diminished.
Plain and undiminished are semantically related. Sometimes you can use "Plain" instead an adjective "Undiminished".
Cite this Source
Undiminished and Plain. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/plain/undiminished
Plain & Undiminished. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/plain/undiminished>.
Undiminished or Plain. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/plain/undiminished.
Google Ngram Viewer shows how "plain" and "undiminished" have occurred on timeline