1
goofy
1
ignorant
1
inept
1
irrational
1
lackbrained
1
lean-minded
1
lean-witted
1
mindless
1
not bright
1
of little brain(expression, idiom)
1
pea-brained
1
pin-brained
1
rash
1
reasonless
1
senseless
1
slackminded
1
slackwitted
1
topless
1
ungifted
1
unintellectual
11 years ago|1.8k views|share |citing 
APASmart Define. (2015). headless thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/headless/thesaurus/synonyms
ChicagoSmart Define. 2015. "headless thesaurus" https://smartdefine.org/headless/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, headless thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/headless/thesaurus/synonyms>.
MLASmart Define. "headless thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/headless/thesaurus/synonyms>