53 entries under humdrum topic. ×

10
monotonous(adjective, dull, simple, plain, ordinary)
9
prosaic(adjective, dull, bad, simple, flat)
7
irksome(adjective, dull, simple, clean, plain)
6
blah(adjective, dull, weak, smooth, simple)
6
vapid(adjective, dull, simple, flat, clean)
5
pedestrian(adjective, dull, simple, clean, plain)
5
wearying(adjective, dull, boring, tired, tedious)
4
soporific(adjective, dull, flat, boring, tedious)
3
banal(adjective, dull, simple, flat, clean)
3
colorless(adjective, dull, simple, flat, clean)
3
drab(adjective, dull, simple, flat, clean)
3
prosy(adjective, dull, bad, simple, soft)
3
tame(adjective, dull, simple, flat, clean)
2
nothing(adjective, dull, weak, smooth, simple)
2
stale(adjective, dull, simple, clean, plain)
2
uneventful(adjective, simple, clean, plain, ordinary)
1
actual(adjective, simple, flat, clean, plain)
1
clean(adjective, simple, flat, plain, ordinary)
1
diddly(adjective, bad, simple, flat, clean)
1
dim(adjective, dull, flat, boring, lifeless)
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APASmart Define. (2015). ho-hum thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/ho-hum/thesaurus/synonyms
ChicagoSmart Define. 2015. "ho-hum thesaurus" https://smartdefine.org/ho-hum/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, ho-hum thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/ho-hum/thesaurus/synonyms>.
MLASmart Define. "ho-hum thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/ho-hum/thesaurus/synonyms>