Synonyms|175Antonyms|82|Broader|0Narrower|0Related|1k
1
knowledgeable
1
nimble
1
reasonable
1
sagacious
1
savvy
1
sensible
1
sharp
1
sharp-witted
1
shrewd
1
supersmart
1
thinking
1
ultrasmart
1
wise
0
acute
0
apt
0
bright blue
0
clear-eyed
0
clear-sighted
0
crafty
0
discerning
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APASmart Define. (2015). thickheaded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/thickheaded/thesaurus/antonyms
ChicagoSmart Define. 2015. "thickheaded thesaurus" https://smartdefine.org/thickheaded/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2015, thickheaded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/thickheaded/thesaurus/antonyms>.
MLASmart Define. "thickheaded thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/thickheaded/thesaurus/antonyms>