shrewd Antonyms

risible unaware unbooked unconscious undiscerning unlearned unread unreasonable unthinking unweary unwise unwitting viewless thick thalian roasting scatter-brained scorching searing semiconscious senseless shallow silly slow soft-headed stupid sweltering wacky weak-minded witless uneducated birdbrained gormless dim-witted imbecilic unintelligent unsharpened untactful unperceptive unschooled unselfconscious unsuspecting nescient unknowing unenlightened uninformed unlettered uncultivated dotty airheaded