Stir from slumber (5)
I believe the answer is:
rouse
'stir from slumber' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for rouse that I've seen before include "Agitate" , "Move" , "Wake up, make active" , "Stir from inactivity" , "Cause to wake up, stimulate" .)