noun. The state or quality of being keen in any sense of that word; sharpness; acuteness; intensity.

noun. The quality or state of being keen.

noun. sharpness or cutting ability

noun. astuteness or sagacity

noun. a positive feeling of wanting to push ahead with something

noun. a quick and penetrating intelligence

noun. thinness of edge or fineness of point

""John is still after the caves," and Harry laughed, as he recalled the keenness with which John had arranged the trips."

agility  alertness  clearness  cleverness  directness  

absolute zero  acerbity  acidity  acidness  acidulousness