activeness activeness /ˈækˌtɪvnəs/

noun

1. The trait of being active; moving or acting rapidly and energetically  ( activeness , activity )
   the trait of being active; moving or acting rapidly and energetically
    The level of activity declines with age
   the level of activity declines with age
   
2. The state of being active  ( activeness , action , activity )
   the state of being active
    His sphere of activity
   his sphere of activity
    He is out of action
   he is out of action