16
ugly(adjective, appearance, nasty, unpleasant, common)
16
visible(adjective, clear, see, exact, significant)
15
commonplace(adjective, good, dull, mean, simple)
15
ingenuous(adjective, good, open, direct, free)
15
level(noun, adjective, nature, characteristic, quiet)
15
transparent(adjective, clear, open, direct, free)
15
unattractive(adjective, appearance, unpleasant, awful, common)
14
austere(adjective, simple, clean, harsh, pure)
14
clear-cut(adjective, clear, see, simple, sharp)
14
comprehensible(adjective, clear, simple, sharp, distinct)
14
downright(adjective, clear, open, direct, free)
14
dull(adjective, weak, simple, tough, flat)
14
forthright(adjective, good, open, light, direct)
14
naive(adjective, open, direct, free, simple)
14
sheer(adjective, clear, right, clean, big)
14
unassuming(adjective, quiet, mean, simple, soft)
13
absolute(adjective, clear, flat, clean, firm)
13
dry(adjective, dull, quality, simple, tough)
13
elementary(adjective, clear, light, smooth, simple)
13
even(adjective, adverb, characteristic, calm, quiet)
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APASmart Define. (2016). plain thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/plain/thesaurus/synonyms
ChicagoSmart Define. 2016. "plain thesaurus" https://smartdefine.org/plain/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, plain thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/plain/thesaurus/synonyms>.
MLASmart Define. "plain thesaurus" 31 March 2016. Web. 20 September 2026. <https://smartdefine.org/plain/thesaurus/synonyms>