125 entries under open topic. ×

2
up-front(adjective, simple, easy, friendly)
2
upright(free, honest, straightforward, sincere)
1
being oneself(expression, adjective, simple, easy)
1
call a spade a spade(expression, free, honest, straightforward)
1
credulous(adjective, smooth, simple, easy)
1
dead-level(honest, true, straightforward, straight)
1
dear(honest, true, straightforward, straight)
1
devout(honest, true, straightforward, straight)
1
earnest(adjective, calm, honest, true)
1
equitable(honest, fair, straightforward, blunt)
1
faithful(honest, true, straightforward, straight)
1
from the hip(expression, free, honest, straightforward)
1
good(adjective, honest, pure, true)
1
heartfelt(honest, true, straightforward, straight)
1
honest to God(expression, idiom, honest, true)
1
ignorant(adjective, smooth, simple, easy)
1
impulsive(adjective, simple, easy, natural)
1
inartificial(adjective, smooth, simple, easy)
1
instinctive(adjective, simple, easy, natural)
1
meant(honest, true, straightforward, straight)
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APASmart Define. (2016). plain thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/plain/thesaurus/synonyms
ChicagoSmart Define. 2016. "plain thesaurus" https://smartdefine.org/plain/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, plain thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/plain/thesaurus/synonyms>.
MLASmart Define. "plain thesaurus" 31 March 2016. Web. 22 September 2026. <https://smartdefine.org/plain/thesaurus/synonyms>