Synonyms|292Antonyms|76|Broader|0Narrower|0Related|913
1
serious
1
sharp
1
sharp-witted
1
shrewd
1
slick
1
supersmart
1
ultrasmart
0
acute
0
alert
0
apt
0
bright blue
0
canny
0
cerebral
0
clear-eyed
0
clear-sighted
0
crafty
0
cunning
0
discerning
0
educated
0
erudite
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APASmart Define. (2015). empty-headed thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/empty-headed/thesaurus/antonyms
ChicagoSmart Define. 2015. "empty-headed thesaurus" https://smartdefine.org/empty-headed/thesaurus/antonyms (accessed September 21, 2026).
HarvardSmart Define 2015, empty-headed thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/empty-headed/thesaurus/antonyms>.
MLASmart Define. "empty-headed thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/empty-headed/thesaurus/antonyms>