Bold
Plain
Plain adjective - Free from all additions or embellishment.
Bold is a synonym for plain in speech topic. Sometimes you can use "Bold" instead an adjective "Plain", if it concerns topics such as straightforward.
Mutual synonyms
Both words in one sentence
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Cynicism from her sisters, being plain faced, bold, ambitious, blunt, terribly unladylike, and the unofficial protagonist.
Source: Literature / Little Women -
Superheroes Wear Tights Tights Under Shorts: It's interesting to note that Incandescence is not bare-legged or wearing the standard bold-colored superhero tights, but instead is wearing plain opaque black tights.
Source: Comic Book / Incandescence - The end credits in the first couple of episodes were written in a fancy script font rather than the plain Helvetica Bold in later episodes.
Cite this Source
Plain and Bold. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/bold/plain
Bold & Plain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/bold/plain>.
Plain or Bold. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/bold/plain.
Google Ngram Viewer shows how "bold" and "plain" have occurred on timeline