287 entries under adjective topic. ×

1
addled(upset, light, simple, slow)
1
at a loss for words(expression, idiom, quiet, speak)
1
blah(stupid, ordinary, commonplace, bland)
1
bland(stupid, ordinary, commonplace, predictable)
1
blithering
1
bromidic(stupid, ordinary, commonplace, bland)
1
buttoned up(expression, close, quiet, soft)
1
chuckle-headed
1
close-mouthed(close, quiet, soft, low)
1
common(stupid, ordinary, commonplace, bland)
1
commonplace(stupid, ordinary, bland, predictable)
1
compact
1
conventional(stupid, ordinary, commonplace, bland)
1
cornball(stupid, ordinary, commonplace, bland)
1
cornfed(stupid, ordinary, commonplace, bland)
1
corny(stupid, ordinary, commonplace, bland)
1
could hear a pin drop(expression, idiom, close, quiet)
1
deficient(dull, silly, foolish, stupid)
1
dull as dishwater(expression, idiom, stupid, ordinary)
1
dummy(dull, unintelligent, witless)
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APASmart Define. (2016). dumb thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/dumb/thesaurus/synonyms
ChicagoSmart Define. 2016. "dumb thesaurus" https://smartdefine.org/dumb/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, dumb thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/dumb/thesaurus/synonyms>.
MLASmart Define. "dumb thesaurus" 29 March 2016. Web. 25 September 2026. <https://smartdefine.org/dumb/thesaurus/synonyms>