149 entries under plain topic. ×

12
pedestrian(adjective, dull, set, simple, flat)
12
stale(adjective, dull, set, hard, simple)
12
workaday(adjective, simple, pure, ordinary)
11
homespun(adjective, characteristic, dull, mean, simple)
11
humdrum(adjective, dull, mean, simple, moderate)
11
lowly(adjective, mean, simple, lower, poor)
10
dull(adjective, boring, ordinary, commonplace, set)
10
monotonous(adjective, ordinary, boring, dull, flat)
10
mundane(adjective, reasonable, stupid, ordinary, regular)
10
poor(adjective, mean, bad, weak, simple)
10
well-known(adjective, famous, ordinary, familiar)
9
modest(adjective, dull, mean, simple, lower)
8
generic(adjective, dull, mean, total)
8
square(noun, adjective, nature, dull, place)
7
baseborn(adjective, mean, simple, rough, poor)
7
platitudinous(adjective, dull, set, hard, simple)
7
proletarian(adjective, mean, simple, lower, gentle)
7
uneventful(adjective, dull, simple, ordinary)
7
unimaginative(adjective, dull, simple, flat)
7
unwashed(adjective, mean, simple, gentle, low)
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APASmart Define. (2016). common thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/common/thesaurus/synonyms
ChicagoSmart Define. 2016. "common thesaurus" https://smartdefine.org/common/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2016, common thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/common/thesaurus/synonyms>.
MLASmart Define. "common thesaurus" 23 March 2016. Web. 21 September 2026. <https://smartdefine.org/common/thesaurus/synonyms>