Disturbance, agitation (6)
I believe the answer is:
unrest
I believe this is a double definition.
'disturbance' is the first definition.
(I've seen this in another clue)
'agitation' is the second definition.
(I know that agitation can be written as unrest)
(Other definitions for unrest that I've seen before include "Rebellious state" , "Discontent, disturbance" , "Disturbance or dissatisfaction" , "Civic disturbance" , "Troubled, rebellious, condition" .)