keenness

/ˈkiːnnəs/
noun
  1. The quality of being eager or enthusiastic.
    • His keenness for adventure led him to travel around the world.
    • Her keenness to learn new skills impressed her boss.
    • The team showed great keenness during the practice session.
  2. The quality of being sharp, intense, or acute (of senses, mind, or objects).
    • The keenness of the knife made cutting vegetables easy.
    • Her keenness of vision allowed her to spot the bird from far away.
    • The detective's keenness of mind helped solve the mystery quickly.