astute Antonyms

preposterous thoughtless touched turbid undiscerning vacuous wacky wandering wayward weak-minded witless wooden ill-advised absentminded addlepated around the bend barmy dotty thick thalian tactless purblind rabid rash reckless ridiculous risible scatter-brained sedentary senseless shallow shambling silly simple-minded slipshod slow slow-witted stupid kooky airheaded empty-headed imbecilic half-assed unintelligent muttonheaded pea-brained scatterbrained screwy unsharpened slow on the uptake