129 entries under plain topic. ×

5
unqualified(adjective, clear, fit, friendly, flat)
4
express(verb, adjective, clear, honest)
4
familiar(adjective, calm, close, clear, free)
4
outstanding(adjective, clear, unsettled, obvious)
4
plainspoken(adjective, clear, show, easy, honest)
3
literal(honest, true, straightforward, straight)
3
real(adjective, good, free, simple, easy)
3
unadorned(simple, natural, straightforward, straight)
3
uncontrived(adjective, simple, natural, genuine)
2
absolute(adjective, clear, complete, simple, flat)
2
certain(clear, flat, total, true)
2
definite(adjective, clear, flat, total)
2
distinct(adjective, clear, obvious, manifest)
2
indubitable(adjective, clear, flat, total)
2
lay it on the line(expression, adjective, idiom, good, free)
2
lucid(adjective, clear, straightforward, distinct)
2
matter-of-fact(adjective, direct, free, easy, honest)
2
mellow(adjective, simple, friendly, appropriate, honest)
2
outright(adjective, free, honest, total)
2
positive(clear, flat, total, true)
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APASmart Define. (2016). open thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/open/thesaurus/synonyms
ChicagoSmart Define. 2016. "open thesaurus" https://smartdefine.org/open/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, open thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/open/thesaurus/synonyms>.
MLASmart Define. "open thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/open/thesaurus/synonyms>