67 entries under plain topic. ×

11
unreserved(adjective, clear, show, open, direct)
10
blunt(adjective, open, direct, free, easy)
8
transparent(adjective, open, direct, free, easy)
7
aboveboard(adjective, open, direct, free, simple)
7
free(adjective, open, direct, easy, honest)
7
plain-spoken(adjective, open, free, honest)
6
downright(adjective, adverb, clear, show, open)
6
truthful(adjective, good, open, direct, free)
6
undisguised(adjective, good, open, direct, free)
5
real(adjective, good, open, direct, free)
4
easy(open, free, honest, blunt)
4
heart-to-heart(adjective, open, direct, free, easy)
4
plainspoken(adjective, clear, show, open, honest)
4
pure(adjective, simple, honest, natural)
4
uninhibited(adjective, open, direct, free, easy)
3
bold(adjective, open, direct, free, easy)
3
scrupulous(open, free, honest, fair)
3
unpretentious(adjective, open, simple, easy)
3
upright(adjective, good, open, direct, free)
2
apparent(adjective, open, direct, free, easy)
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APASmart Define. (2015). ingenuous thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/ingenuous/thesaurus/synonyms
ChicagoSmart Define. 2015. "ingenuous thesaurus" https://smartdefine.org/ingenuous/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, ingenuous thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/ingenuous/thesaurus/synonyms>.
MLASmart Define. "ingenuous thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/ingenuous/thesaurus/synonyms>