adjective — [res-tiv]

definition: (of a person) unable to keep still or silent and becoming increasingly difficult to control, esp. because of impatience, dissatisfaction, or boredom.

example usage:

Our creation in the image of God makes the human spirit restive in the middle of this substitute paradise we call the West. Indeed, as Augustine once observed, it is restless until it finds rest in God who made it. The story of the West, in many ways, is also the story of this restiveness.

David Wells, The Courage to Be Protestant, 108