acuteness in WordNet English dictionary

1. a quick and penetrating intelligence
   "he argued with great acuteness"; "I admired the keenness of his mind"
   acuteness  acuity  sharpness  keenness 
   
2. the quality of having a sharp edge or point
   acuteness 
   
3. a sensitivity that is keen and highly developed
   "dogs have a remarkable acuteness of smell"
   acuteness