perceptivity
антонимы:
density, dullness, obtuseness, brainlessness, folly, foolishness, idiocy, imbecility, mindlessness, silliness, simplemindedness, simpleness, stupidity, witlessness, illogic, irrationality, unreasonableness, unsoundness, craziness, insanity, lunacy, madness, preposterousness, senselessness, zaniness,