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140 entries under adjective topic. ×

2
blah(dull, weak, simple, plain)
2
boring(dull, weak, simple, plain)
2
flat(dull, weak, plain, mild)
2
ho hum(expression, dull, weak, simple)
2
humdrum(dull, weak, plain, mild)
2
nothing(dull, weak, plain, mild)
1
banal(dull, weak, plain, mild)
1
bland(dull, weak, plain, mild)
1
bromidic(dull, simple, stupid, ordinary)
1
clichéd(stupid, ordinary, commonplace, puny)
1
common(dull, stupid, ordinary, boring)
1
commonplace(dull, stupid, ordinary, boring)
1
conventional(stupid, ordinary, commonplace, bland)
1
cornball(stupid, ordinary, commonplace, puny)
1
cornfed(stupid, ordinary, commonplace, puny)
1
corny(stupid, ordinary, commonplace, bland)
1
drab(dull, colorless)
1
draggy(dull, simple, boring, tedious)
1
dreary(dull, simple, boring, tedious)
1
droning(dull, flat, boring, tedious)
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APASmart Define. (2015). dull as dishwater thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/dull_as_dishwater/thesaurus/synonyms
ChicagoSmart Define. 2015. "dull as dishwater thesaurus" https://smartdefine.org/dull_as_dishwater/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, dull as dishwater thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/dull_as_dishwater/thesaurus/synonyms>.
MLASmart Define. "dull as dishwater thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/dull_as_dishwater/thesaurus/synonyms>