389 entries under simple topic. ×

14
unassuming(adjective, quiet, mean, soft)
13
dry(adjective, dull, quality, tough)
13
elementary(adjective, clear, light, smooth)
13
everyday(adjective, mean, poor, pure)
13
natural(adjective, open, direct, free)
13
unsophisticated(adjective, open, easy, honest)
12
basic(adjective, clear, light, smooth)
12
discreet(adjective, calm, quality, soft)
12
intelligible(adjective, clear, easy, sharp)
12
spare(adjective, soft, shy, meek)
12
undecorated(adjective, clean, pure, ordinary)
12
unostentatious(adjective, quiet, soft, reasonable)
11
bald(adjective, open, direct, honest)
11
easy(adjective, quiet, clear, open, light)
11
express(verb, adjective, clear, right)
11
guileless(adjective, open, direct, free)
11
homey(adjective, quality, open, easy)
11
indisputable(adjective, clear, true, straightforward)
11
legible(adjective, clear, easy, sharp)
11
out-and-out(adjective, clear, complete, flat)
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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>