313 entries under adjective topic. ×

13
slow(dull, boring, tedious, dullness)
11
jejune(dull, flat, ordinary, dry)
11
bland(dull, weak, plain, mild)
11
routine(dull, weak, simple, moderate)
11
stupid(dull, flat, ordinary, dry)
11
uneventful(dull, simple, clean, plain)
10
arid(dull, flat, stupid, ordinary)
10
common(dull, mean, simple, moderate)
10
dead(dull, simple, flat, plain)
10
ho-hum(dull, simple, clean, plain)
10
run-of-the-mill(dull, moderate, flat, common)
9
drab(dull, simple, clean, plain)
9
hackneyed(simple, moderate, flat, clean)
9
lifeless(dull, weak, simple, plain)
9
monotone(noun, dull, change, excite)
9
prosy(dull, simple, flat, plain)
9
repetitious(dull, flat, stupid, ordinary)
9
soporific(dull, flat, ordinary, dry)
9
unimaginative(dull, simple, flat, plain)
9
uninspired(dull, indifferent, inferior, ordinary)
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APASmart Define. (2016). humdrum thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/humdrum/thesaurus/synonyms
ChicagoSmart Define. 2016. "humdrum thesaurus" https://smartdefine.org/humdrum/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2016, humdrum thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/humdrum/thesaurus/synonyms>.
MLASmart Define. "humdrum thesaurus" 23 March 2016. Web. 26 September 2026. <https://smartdefine.org/humdrum/thesaurus/synonyms>