2
imperceptive
2
laugh
2
lumpish
2
messy
2
opaque
2
slovenly
2
slow-witted(adjective, mind, think)
2
tasteless
2
tatty
2
thickheaded
2
trashy
2
uneducated
2
unkempt
2
untidy
2
weak-minded(adjective, mind, think)
1
dingy
1
empty-headed(adjective, scatterbrained, flighty)
1
absurd
1
airheaded
1
anserine
10 years ago|6.6k views|share |citing 
APASmart Define. (2016). smart thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/smart/thesaurus/antonyms
ChicagoSmart Define. 2016. "smart thesaurus" https://smartdefine.org/smart/thesaurus/antonyms (accessed September 23, 2026).
HarvardSmart Define 2016, smart thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/smart/thesaurus/antonyms>.
MLASmart Define. "smart thesaurus" 24 March 2016. Web. 23 September 2026. <https://smartdefine.org/smart/thesaurus/antonyms>