Plain
Plain adjective - Free from all additions or embellishment.
Unprepossessing is a synonym for plain in ugly topic. In some cases you can use "Unprepossessing" instead an adjective "Plain", when it comes to topics like unattractive.
Unprepossessing
Unprepossessing adjective - Creating an unfavorable or neutral first impression.
Plain is a synonym for unprepossessing in unattractive topic. You can use "Plain" instead an adjective "Unprepossessing".
Cite this Source
Unprepossessing and Plain. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/plain/unprepossessing
Plain & Unprepossessing. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/plain/unprepossessing>.
Unprepossessing or Plain. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/plain/unprepossessing.
Google Ngram Viewer shows how "plain" and "unprepossessing" have occurred on timeline