Synonyms|1.5kAntonyms|380|Broader|20Narrower|16Related|2.1k
27
dark(adjective, clear, light, obscure, clean)
16
dull(adjective, good)
13
unintelligent
10
colorless(adjective, bright, lively, uninteresting, hue)
10
dim-witted
9
stupid
8
cloudy(adjective, good, clear)
8
dulled(verb, adjective)
7
dumb
7
fatuous
6
dammit
6
faint
6
murky(adjective, good, clear)
5
dim(adjective, light, obscure, dark, lively)
5
brainless
5
birdbrained
5
darkish
4
dimmed
4
dusky
3
dopey
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ChicagoSmart Define. 2016. "brilliant thesaurus" https://smartdefine.org/brilliant/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, brilliant thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/brilliant/thesaurus/antonyms>.
MLASmart Define. "brilliant thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/brilliant/thesaurus/antonyms>