43 entries under simple topic. ×

14
stale(adjective, dull, set, hard)
14
trite(adjective, dull, set, hard)
12
commonplace(adjective, dull, set, hard)
11
pedestrian(noun, adjective, dull, set)
10
banal(adjective, dull, set, hard)
8
hackneyed(adjective, dull, set, hard)
8
common(adjective, dull, set, hard)
4
dull(adjective, set, hard, flat)
4
flat(adjective, dull, set, hard)
4
ordinary(adjective, dull, set, flat)
4
vapid(adjective, dull, set, flat)
3
humdrum(adjective, dull, clean, plain)
3
prose(adjective, clean, plain, ordinary)
2
mundane(adjective, dull, plain, stupid)
2
nothing(adjective, dull, clean, plain)
2
nowhere(adjective, dull, clean, plain)
2
square(adjective, clean, plain, stupid)
2
unimaginative(adjective, dull, plain, stupid)
2
zero(adjective, dull, clean, plain)
1
actual(adjective, clean, plain, ordinary)
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APASmart Define. (2015). platitudinous thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/platitudinous/thesaurus/synonyms
ChicagoSmart Define. 2015. "platitudinous thesaurus" https://smartdefine.org/platitudinous/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, platitudinous thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/platitudinous/thesaurus/synonyms>.
MLASmart Define. "platitudinous thesaurus" 13 April 2015. Web. 25 September 2026. <https://smartdefine.org/platitudinous/thesaurus/synonyms>