Natural
Natural adjective - Free from any intent to deceive or impress others.
Usage example: she was completely natural in expressing her feelings for him, unafraid of how they would be received
Plain is a synonym for natural in pure topic. In some cases you can use "Plain" instead an adjective "Natural", when it comes to topics like genuine, open, organic, unprocessed.
Mutual synonyms
Both words in one sentence
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Hidden in Plain Sight: Of course a natural part of Transformers, but with the world aware of their existence the Autobots at least are less careful about showing their true colors, specifically the Wreckers (sporting weaponized NASCAR vehicles as their natural alternate mode).
- Sera from Dragon Age: Inquisition; partly because she sees mages as natural elites, partly because she's just plain scared of anything Fade-related.
Source: Does Not Like Magic -
The flavor of this betterness will vary across stories and authors between all-natural, magical, or just plain nasty.
Source: Our Elves Are Better
Cite this Source
Plain and Natural. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/natural/plain
Natural & Plain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/natural/plain>.
Plain or Natural. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/natural/plain.
Google Ngram Viewer shows how "natural" and "plain" have occurred on timeline