Excite or disturb (7)
I believe the answer is:
agitate
I believe this is a double definition.
'excite' is the first definition.
(I know that excite can be written as agitate)
'disturb' is the second definition.
(I know that agitate is a kind of disturb)
(Other definitions for agitate that I've seen before include "Stir; arouse" , "Perturb" , "'Stir, excite (7)'" , "Disturb or stir up" , "Keep moving" .)