restiveness

/ˈrɛstɪvnəs/
noun
  1. The state or quality of being restless, impatient, or difficult to control; uneasiness under restriction.
    • The horse's restiveness made it hard for the rider to keep it still.
    • There was a sense of restiveness among the students during the long assembly.
    • The restiveness of the crowd grew as the concert was delayed for an hour.