1
silly
1
simple
1
simpleminded
1
slow-witted
1
soft
1
softheaded
1
stupid
1
thick-witted
1
thickheaded
1
tomfool
1
unsmart
1
unwise
1
vacuous
1
wacky
1
weak-minded
1
witless
1
wormhearted(smart, intelligent, quick-witted)
1
zany
0
beginner
0
boobish
10 years ago|1.5k views|share |citing 
APASmart Define. (2016). brainy thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/brainy/thesaurus/antonyms
ChicagoSmart Define. 2016. "brainy thesaurus" https://smartdefine.org/brainy/thesaurus/antonyms (accessed September 25, 2026).
HarvardSmart Define 2016, brainy thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/brainy/thesaurus/antonyms>.
MLASmart Define. "brainy thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/brainy/thesaurus/antonyms>