n. 25B6; noun
he cursed their stupidity : LACK OF INTELLIGENCE, foolishness, denseness, brainlessness, ignorance, dull-wittedness, slow-wittedness, doltishness, slowness; informal thickness, dimness, dopiness, doziness.
she blushed at her stupidity : FOOLISHNESS, folly, silliness, idiocy, brainlessness, senselessness, injudiciousness, ineptitude, inaneness, inanity, absurdity, ludicrousness, ridiculousness, fatuousness, madness, insanity, lunacy; informal craziness; Brit. informal daftness.