1,116 entry under adjective topic. ×

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homey(quality, open, simple, easy)
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indisputable(clear, simple, true, straightforward)
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legible(clear, simple, easy, sharp)
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observable(clear, see, substantial, obvious)
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out-and-out(clear, complete, simple, flat)
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outright(good, clear, open, direct)
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perspicuous(clear, sharp, definite, distinct)
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plane(noun, characteristic, calm, quiet)
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routine(good, dull, clear, simple)
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rustic(open, simple, easy, clean)
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severe(calm, clear, simple, harsh)
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smooth(characteristic, calm, clear, light)
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unaffected(open, simple, tough, reasonable)
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uncomplicated(clear, light, smooth, simple)
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undiluted(strong, simple, clean, pure)
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unmixed(strong, simple, clean, pure)
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unqualified(clear, open, right, friendly)
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well-defined(clear, sharp, exact, straightforward)
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genuine(good, open, simple, right)
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homespun(dull, simple, ordinary, usual)
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APASmart Define. (2016). plain thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/plain/thesaurus/synonyms
ChicagoSmart Define. 2016. "plain thesaurus" https://smartdefine.org/plain/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, plain thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/plain/thesaurus/synonyms>.
MLASmart Define. "plain thesaurus" 31 March 2016. Web. 23 September 2026. <https://smartdefine.org/plain/thesaurus/synonyms>