feeble-mindedness

absurdity apathy idiocy ignorance lunacy nonsense silliness

asininity fatuity fatuousness imbecility imprudence incapacity ineptitude injudiciousness insensibility obtuseness puerility shallowness simplicity slowness sluggishness stolidity stupefaction stupor weakness

battiness brainlessness doltishness nitwittedness stupidness thick-headedness weak-mindedness

intelligence sense

acumen canniness judgment shrewdness wisdom