restive
Definitions
Unable to keep still or silent and becoming increasingly difficult to control, especially because of impatience, dissatisfaction, or boredom.
Reluctant to be controlled or be guided; stubbornly impatient.
Examples
The restive crowd began to chant slogans as the delay in the proceedings stretched into its second hour.
After being cooped up in the classroom all day, the students grew increasingly restive and eager for recess.
The horse became restive when it sensed the presence of a predator lurking in the nearby brush.