agitation
(n) : the act of agitating, or the state of being agitated; the state of being moved with violence, or with irregular action; commotion; a stirring up or arousing; disturbance of tranquillity; disturbance of mind which shows itself by physical excitement; perturbation
"the sea after a storm is in agitation."
synonyms: emotion, commotion, excitement more», trepidation, tremor, perturbation