129 entries under plain topic. ×

16
aboveboard(adjective, feature, characteristic, good, honor)
16
manifest(adjective, clear, show, present, promote)
16
unrestricted(adjective, clear, free, easy, friendly)
15
blunt(adjective, clear, direct, free, easy)
15
downright(adjective, clear, show, direct, free)
15
obvious(adjective, clear, bold, manifest)
15
truthful(adjective, feature, characteristic, good, honor)
14
undisguised(adjective, good, clear, free, easy)
13
naive(adjective, calm, direct, free, simple)
13
square(adjective, feature, characteristic, good, honor)
12
apparent(adjective, clear, free, easy, honest)
12
conspicuous(adjective, clear, bold, obvious)
12
natural(adjective, calm, free, smooth, simple)
12
simple(adjective, clear, easy, flat, honest)
12
transparent(adjective, clear, direct, free, easy)
12
true(adjective, feature, characteristic, good, honor)
12
unaffected(adjective, simple, honest, true)
12
unequivocal(adjective, clear, flat, honest, total)
12
upright(adjective, feature, characteristic, good, honor)
11
visible(adjective, clear, bare, obvious)
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APASmart Define. (2016). open thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/open/thesaurus/synonyms
ChicagoSmart Define. 2016. "open thesaurus" https://smartdefine.org/open/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, open thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/open/thesaurus/synonyms>.
MLASmart Define. "open thesaurus" 26 February 2016. Web. 21 September 2026. <https://smartdefine.org/open/thesaurus/synonyms>