308 entries under straightforward topic. ×

14
forthright(adjective, good, open, light, direct)
14
naive(adjective, open, direct, free, simple)
14
unassuming(adjective, quiet, mean, simple, soft)
13
dry(adjective, dull, quality, simple, tough)
13
elementary(adjective, clear, light, smooth, simple)
13
everyday(adjective, mean, simple, poor, pure)
13
natural(adjective, open, direct, free, simple)
13
outspoken(adjective, clear, open, direct, free)
12
basic(adjective, clear, light, smooth, simple)
12
intelligible(adjective, clear, simple, easy, sharp)
11
bald(adjective, open, direct, simple, honest)
11
easy(adjective, quiet, clear, open, light)
11
express(verb, adjective, clear, simple, right)
11
guileless(adjective, open, direct, free, simple)
11
homey(adjective, quality, open, simple, easy)
11
indisputable(adjective, clear, simple, true)
11
routine(adjective, good, dull, clear, simple)
11
severe(adjective, calm, clear, simple, harsh)
11
smooth(adjective, characteristic, calm, clear, light)
11
unaffected(adjective, open, simple, tough, reasonable)
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APASmart Define. (2016). plain thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/plain/thesaurus/synonyms
ChicagoSmart Define. 2016. "plain thesaurus" https://smartdefine.org/plain/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, plain thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/plain/thesaurus/synonyms>.
MLASmart Define. "plain thesaurus" 31 March 2016. Web. 24 September 2026. <https://smartdefine.org/plain/thesaurus/synonyms>