2
brain-dead
2
gray
2
lusterless
2
unimpressive
1
bleary
1
boneheaded
1
bubbleheaded
1
chuckleheaded
1
darkling
1
darksome
1
dismal
1
doltish
1
dorky
1
dunderheaded
1
empty-headed
1
feeble
1
feebleminded
1
flat
1
fool
1
forlorn
10 years ago|5.1k views|share |citing 
APASmart Define. (2016). brilliant thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/brilliant/thesaurus/antonyms
ChicagoSmart Define. 2016. "brilliant thesaurus" https://smartdefine.org/brilliant/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2016, brilliant thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/brilliant/thesaurus/antonyms>.
MLASmart Define. "brilliant thesaurus" 24 March 2016. Web. 26 September 2026. <https://smartdefine.org/brilliant/thesaurus/antonyms>