Plain
Plain adjective - Free from all additions or embellishment.
Usage example: just give us the plain facts and none of your snide comments
Simple is a synonym for plain in quality topic. In some cases you can use "Simple" instead the word "Plain" as an adjective or a noun, when it comes to topics like clean, character trait, normal, natural. informal substitute
Simple
Simple adjective - Free from all additions or embellishment.
Usage example: a simple design, and one that never goes out of fashion
Plain is a synonym for simple in clear topic. You can use "Plain" instead the word "Simple" as an adjective or a noun, if it concerns topics such as clean, character trait, honest, candid. informal substitute
Mutual synonyms
Both words in one sentence
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It starts pretty normal, starts losing it in the Black Rose arc, and becomes a metaphor/symbolism storm in the final arc - and the movie is a mental trainwreck, plain and simple.
Source: Anime / Revolutionary Girl Utena - No matter which game in the Mega Man metaseries you're playing, the plain and simple Buster attack is this trope.
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Charles attempts to justify it to a shocked Giuliano della Rovere by saying "'Tis war, Cardinal, plain and simple".
Source: Series / The Borgias
Cite this Source
Simple and Plain. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/plain/simple
Plain & Simple. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/plain/simple>.
Simple or Plain. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/plain/simple.
Google Ngram Viewer shows how "plain" and "simple" have occurred on timeline