75 entries under plain topic. ×

7
downright(adjective, open, direct, free, easy)
6
simple(adjective, direct, honest, straightforward)
6
unambiguous(adjective, clear, honest, straight)
4
specific(adjective, clear, obvious)
4
square(adjective, open, honest, true)
4
undisguised(adjective, open, free, easy, honest)
3
aboveboard(open, honest, straightforward, sincere)
3
clear(adjective, obvious, succinct)
3
real(open, free, honest, true)
3
unconcealed(adjective, open, direct, free, easy)
2
childlike(honest, innocent, artless, unworldly)
2
definite(clear, obvious)
2
innocent(honest, artless, unworldly, trustful)
2
matter-of-fact(adjective, open, direct, free, easy)
2
naive(open, direct, free, honest)
2
natural(open, free, honest, true)
2
obvious(adjective, clear)
2
scrupulous(open, free, honest, straightforward)
2
trustful(honest, innocent, artless, unworldly)
2
trusting(honest, innocent, artless, unworldly)
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APASmart Define. (2015). outspoken thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/outspoken/thesaurus/synonyms
ChicagoSmart Define. 2015. "outspoken thesaurus" https://smartdefine.org/outspoken/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, outspoken thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/outspoken/thesaurus/synonyms>.
MLASmart Define. "outspoken thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/outspoken/thesaurus/synonyms>