What does the word agitation mean?

Usage examples for agitation

  1. He entered the room as the clock struck nine, accompanied by an assistant, their appearance produced some agitation in the family; but the doctor entered into conversation on indifferent subjects for a while, before he spoke of the object of his visit. – The Young Emigrants; Madelaine Tube; The Boy and the Book; and Crystal Palace by Susan Anne Livingston Ridley Sedgwick
  2. There was quick agitation in her voice. – Charles Rex by Ethel M. Dell
  3. He vanished, leaving Viola lost in surprise, agitation, and delight. – Zanoni by Edward Bulwer Lytton