90 entries under boring topic. ×

18
tedious(adjective, dull, simple, plain, ordinary)
16
dull(adjective, simple, flat, plain, ordinary)
14
tiresome(adjective, dull, disagreeable, tedious)
10
humdrum(adjective, dull, simple, clean, plain)
10
monotonous(adjective, dull, simple, plain, ordinary)
9
prosaic(adjective, dull, bad, simple, flat)
9
uninteresting(adjective, dull, tedious, dreary)
9
wearisome(adjective, dull, tedious, dreary)
8
flat(adjective, dull, weak, smooth, simple)
7
irksome(adjective, dull, simple, clean, plain)
6
blah(adjective, dull, weak, smooth, simple)
6
dead(adjective, dull, simple, flat, clean)
6
dry(adjective, dull, simple, flat, clean)
6
vapid(adjective, dull, simple, flat, clean)
5
heavy(adjective, dull, tired, tedious)
5
pedestrian(adjective, dull, simple, clean, plain)
5
wearying(adjective, dull, tired, tedious)
4
lifeless(adjective, dull, simple, flat, clean)
4
soporific(adjective, dull, flat, tedious)
4
tiring(adjective, dull, tedious, dreary)
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APASmart Define. (2015). ho-hum thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/ho-hum/thesaurus/synonyms
ChicagoSmart Define. 2015. "ho-hum thesaurus" https://smartdefine.org/ho-hum/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, ho-hum thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/ho-hum/thesaurus/synonyms>.
MLASmart Define. "ho-hum thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/ho-hum/thesaurus/synonyms>