134 entries under open topic. ×

4
good(adjective, strong, sound, reasonable)
4
inartificial(adjective, smooth, simple, easy)
4
openhearted(adjective, free, friendly, appropriate)
3
meant(adjective, honest, straightforward, straight)
3
regular(adjective, correct, right, honest)
3
uncolored(adjective, good, reasonable, clean)
3
unconcealed(adjective, direct, free, easy)
3
uncontrived(adjective, simple, easy, plain)
3
undissembled(adjective, friendly, appropriate, honest)
3
unpretended(adjective, honest, true, straightforward)
2
accurate(adjective, close, correct, right)
2
lay it on the line(expression, adjective, idiom, good)
2
like it is(expression, adjective, honest, straightforward)
2
literal(honest, plain, true, straightforward)
2
matter-of-fact(adjective, direct, free, easy)
2
neighborly(adjective, person, pleasant, friendly)
2
no-nonsense(adjective, set, direct, severe)
2
objective(adjective, good, reasonable, friendly)
2
plainspoken(adjective, easy, honest, plain)
2
simplehearted(adjective, smooth, simple, easy)
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APASmart Define. (2016). sincere thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/sincere/thesaurus/synonyms
ChicagoSmart Define. 2016. "sincere thesaurus" https://smartdefine.org/sincere/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, sincere thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/sincere/thesaurus/synonyms>.
MLASmart Define. "sincere thesaurus" 31 March 2016. Web. 27 September 2026. <https://smartdefine.org/sincere/thesaurus/synonyms>