13
everyday(adjective, mean, simple, poor, pure)
13
natural(adjective, open, direct, free, simple)
13
outspoken(adjective, clear, open, direct, free)
13
perceptible(adjective, visual, clear, sound, sharp)
13
prairie(noun, nature, flat, grassland, field)
13
unsophisticated(adjective, open, simple, easy, honest)
12
basic(adjective, clear, light, smooth, simple)
12
champaign(noun, flat, land, prairie, lowland)
12
discreet(adjective, calm, quality, simple, soft)
12
intelligible(adjective, clear, simple, easy, sharp)
12
noticeable(adjective, clear, see, obvious, visible)
12
overt(adjective, clear, open, obvious, artless)
12
plateau(noun, nature, flat, level, high)
12
spare(adjective, simple, soft, shy, meek)
12
undecorated(adjective, simple, clean, pure, ordinary)
12
unlovely(adjective, appearance, awful, beautiful, ugly)
12
unmistakeable
12
unostentatious(adjective, quiet, simple, soft, reasonable)
11
bald(adjective, open, direct, simple, honest)
11
broad(adjective, clear, see, full, obvious)
10 years ago|64k views|share |citing 
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>