shrewd Antonyms

ridiculous unaware unbooked unconscious undiscerning unlearned unread unreasonable unthinking untrained unweary unwise unwitting viewless wacky thick thalian risible roasting scalding scatter-brained scorching searing semiconscious senseless shallow silly slow soft-headed stupid sweltering weak-minded witless ill-advised unpretending uneducated birdbrained gormless dim-witted imbecilic unintelligent screwy unsharpened untactful unperceptive unschooled unselfconscious unsuspecting half-baked nescient