190 entries under plain topic. ×

4
forthright(adjective, open, free, honest)
4
friendly(adjective, calm, open, kind, smooth)
4
modest(adjective, simple, clean, informal)
4
rough(adjective, simple, violent, wild)
4
truthful(adjective, open, direct, free, correct)
4
uncontrived(adjective, open, simple, casual)
4
unreserved(adjective, open, direct, free, easy)
3
average(adjective, characteristic, simple, reasonable)
3
callow(adjective, simple, rough, coarse)
3
clear(adjective, simple, bright, clean)
3
confiding(simple, innocent, sincere, artlessness)
3
congenial(adjective, simple, easy, straightforward)
3
down-to-earth(adjective, simple, informal, true)
3
downright(adjective, open, direct, free, honest)
3
neat(adjective, smooth, simple, bright, clean)
3
unembellished(adjective, simple, reasonable, clean, honest)
3
unpolished(adjective, open, simple, bare)
3
unschooled(adjective, open, simple, clean, honest)
2
austere(adjective, simple, clean, pure)
2
bare-faced(open, direct, free, honest)
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APASmart Define. (2016). natural thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/natural/thesaurus/synonyms
ChicagoSmart Define. 2016. "natural thesaurus" https://smartdefine.org/natural/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, natural thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/natural/thesaurus/synonyms>.
MLASmart Define. "natural thesaurus" 15 February 2016. Web. 27 September 2026. <https://smartdefine.org/natural/thesaurus/synonyms>