389 entries under simple topic. ×

11
routine(adjective, good, dull, clear)
11
rustic(adjective, open, easy, clean)
11
severe(adjective, calm, clear, harsh)
11
smooth(adjective, characteristic, calm, clear, light)
11
unaffected(adjective, open, tough, reasonable)
11
uncomplicated(adjective, clear, light, smooth)
11
undiluted(adjective, strong, clean, pure)
11
unmixed(adjective, strong, clean, pure)
10
genuine(adjective, good, open, right)
10
homespun(adjective, dull, ordinary, usual)
10
undisguised(adjective, good, clear, open, free)
10
undistinguished(adjective, good, ordinary, familiar)
9
clean(adjective, clear, easy, sharp)
9
familiar(adjective, dull, open, free)
9
prosaic(adjective, dull, mean, tough)
9
spartan(adjective, clean, pure, natural)
9
unexceptional(adjective, good, reasonable, common)
9
unornamented(adjective, reasonable, clean, pure)
8
chaste(adjective, soft, pure, shy)
8
drab(adjective, calm, dull, soft)
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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>