3
knuckleheaded
1
absurd
1
airheaded
1
asinine
1
balmy
1
birdbrained
1
blockheaded
1
blunderheaded
1
boneheaded
1
brain-dead
1
brainless
1
bubbleheaded
1
chuckleheaded
1
cockeyed
1
crackpot
1
crazy
1
cuckoo
1
daffy
1
daft
1
dense
11 years ago|6.4k views|share |citing 
APASmart Define. (2015). lunkheaded thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lunkheaded/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunkheaded thesaurus" https://smartdefine.org/lunkheaded/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, lunkheaded thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lunkheaded/thesaurus/synonyms>.
MLASmart Define. "lunkheaded thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/lunkheaded/thesaurus/synonyms>