50 entries under flat topic. ×

1
diddly(adjective, bad, simple, clean)
1
dim(adjective, dull, boring, lifeless)
1
droning(adjective, dull, boring, tedious)
1
factual(adjective, simple, clean, plain)
1
garden-variety(adjective, simple, clean, plain)
1
literal(adjective, simple, clean, plain)
1
lusterless(adjective, dull, bad, simple)
1
matte(adjective, dull, boring, lifeless)
1
muted(adjective, dull, boring, lifeless)
1
obscure(adjective, dull, boring, lifeless)
1
pabulum(adjective, dull, weak, smooth, simple)
1
platitudinous(adjective, simple, clean, plain)
1
practicable(adjective, simple, clean, plain)
1
practical(adjective, simple, clean, plain)
1
prose(adjective, simple, clean, plain)
1
recurrent(adjective, dull, boring, tedious)
1
reiterated(adjective, dull, boring, tedious)
1
repetitive(adjective, dull, boring, tedious)
1
samely(adjective, dull, boring, tedious)
1
sing-song(adjective, dull, boring, tedious)
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APASmart Define. (2015). ho-hum thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/ho-hum/thesaurus/synonyms
ChicagoSmart Define. 2015. "ho-hum thesaurus" https://smartdefine.org/ho-hum/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, ho-hum thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/ho-hum/thesaurus/synonyms>.
MLASmart Define. "ho-hum thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/ho-hum/thesaurus/synonyms>