92 entries under monotonous topic. ×

1
oft-repeated(adjective, flat, ordinary, dry, boring)
1
oppressive(adjective, dull, boring, tedious, lifeless)
1
out-of-date(adjective, flat, ordinary, dry, boring)
1
pabulum(adjective, dull, weak, simple, clean)
1
pointless(adjective, flat, ordinary, dry, boring)
1
run of the mill(expression, adjective, idiom, moderate, ordinary)
1
usual thing(expression, adjective, dull, flat, ordinary)
0
draggy(adjective, dull, boring, dreary)
0
drawn out
0
enervating(adjective, dull, boring, dreary)
0
going slowly(expression, slow, tedious)
0
snooze(adjective, dull, boring, dreary)
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APASmart Define. (2016). humdrum thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/humdrum/thesaurus/synonyms
ChicagoSmart Define. 2016. "humdrum thesaurus" https://smartdefine.org/humdrum/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, humdrum thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/humdrum/thesaurus/synonyms>.
MLASmart Define. "humdrum thesaurus" 23 March 2016. Web. 29 September 2026. <https://smartdefine.org/humdrum/thesaurus/synonyms>