Stir created by retreats with slight confusion at the end (5)
I believe the answer is:
roust
'stir' is the definition.
(I've seen this before)
I don't understand how the remainder of the clue works.
(Other definitions for roust that I've seen before include "Get out of bed maybe" , "Root out" , "Rouse, disturb" , "Wake up" , "Treat roughly - disturb" .)