129 entries under plain topic. ×

11
pure(adjective, feature, characteristic, honor, simple)
10
evident(adjective, clear, bare, obvious)
10
barefaced(adjective, clear, direct, rough, honest)
10
clean(verb, adjective, feature, characteristic, good)
10
innocent(adjective, simple, easy, friendly, appropriate)
9
correct(adjective, feature, characteristic, clear, honor)
9
scrupulous(adjective, feature, characteristic, good, honor)
7
easy(adjective, calm, close, clear, free)
7
bold(adjective, close, clear, direct, free)
7
palpable(adjective, clear, true, real)
7
unsophisticated(adjective, simple, easy, honest)
6
green(simple, honest, innocent, artless)
6
unambiguous(adjective, clear, honest, straight)
6
unvarnished(adjective, honest, straightforward, straight)
5
childlike(adjective, simple, easy, honest)
5
clear-cut(adjective, clear, obvious, visible)
5
noticeable(adjective, clear, bold, obvious)
5
trusting(adjective, simple, honest, innocent)
5
uncluttered(adjective, light, simple, out)
5
unmistakable(adjective, clear, total, definite)
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APASmart Define. (2016). open thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/open/thesaurus/synonyms
ChicagoSmart Define. 2016. "open thesaurus" https://smartdefine.org/open/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, open thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/open/thesaurus/synonyms>.
MLASmart Define. "open thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/open/thesaurus/synonyms>