1
simple
1
simpleminded
1
slow
1
slow-witted
1
soft
1
softheaded
1
stupid
1
thick
1
thick-witted
1
thickheaded
1
tomfool
1
unintelligent
1
unsmart
1
unwise
1
vacuous
1
wacky
1
weak-minded
1
witless
1
zany
0
bonehead
11 years ago|6.4k views|share |citing 
APASmart Define. (2015). lunkheaded thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/lunkheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunkheaded thesaurus" https://smartdefine.org/lunkheaded/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, lunkheaded thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/lunkheaded/thesaurus/synonyms>.
MLASmart Define. "lunkheaded thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/lunkheaded/thesaurus/synonyms>