keenness Antonyms

lack of intelligence friction vacuousness vacuity unintelligence torpitude thickness stupidity sopor slowness simpleness reluctance obtuseness nonchalance mildness lentor comatoseness forty winks dull-wittedness dull-headedness lack of concern casual attitude grievances Grudges sottishness slow-wittedness inaneness dulness dopiness doltishness brainlessness insensitivity mindlessness lenitude laziness disregard dislike disgust detestation casualness boredom bluntness bitterness aversion apathy antipathy antagonism animus animosity acrimony