1,116 entry under adjective topic. ×

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unconcealed(clear, open, direct, free)
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undisguised(good, clear, open, free)
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undistinguished(good, simple, ordinary, familiar)
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unsightly(appearance, awful, ugly, revolting)
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clean(clear, simple, easy, sharp)
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familiar(dull, open, free, simple)
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hideous(appearance, awful, common, usual)
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perceivable(clear, substantial, obvious, visible)
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prosaic(dull, mean, simple, tough)
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spartan(simple, clean, pure, natural)
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uncomely(appearance, awful, beautiful, revolting)
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unexceptional(good, simple, reasonable, common)
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unornamented(simple, reasonable, clean, pure)
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unreserved(clear, open, direct, free)
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audible(visual, clear, sound, sharp)
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chaste(simple, soft, pure, shy)
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drab(calm, dull, simple, soft)
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glaring(clear, simple, certain, straightforward)
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grotesque(appearance, awful, common, usual)
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humble(quiet, mean, simple, reasonable)
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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>