-1
vacuous
-1
venturesome
-1
weak-minded
-2
unwise
-2
absurd
-2
achromatic
-2
daft
-2
dense
-2
ignorant
-2
imprudent
-2
inadvisable
-2
jejune
-2
adventuresome
-2
airheaded
-2
birdbrained
-2
boneheaded
-2
brain-dead
-2
hammerhead
-2
harebrained
-2
knuckleheaded
11 years ago|3.5k views|share |citing 
APASmart Define. (2015). sage thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/sage/thesaurus/antonyms
ChicagoSmart Define. 2015. "sage thesaurus" https://smartdefine.org/sage/thesaurus/antonyms (accessed September 26, 2026).
HarvardSmart Define 2015, sage thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/sage/thesaurus/antonyms>.
MLASmart Define. "sage thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/sage/thesaurus/antonyms>