Disturbance in the Scrubs perhaps (4)
I believe the answer is:
stir
'disturbance' is the definition.
(stir can mean a commotion or disturbance)
'the scrubs perhaps' is the wordplay.
I cannot quite understand how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is found in the answer.
The remaining letters 'sir' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for stir that I've seen before include "Commotion; wake" , "Affect emotionally" , "unrest" , "Cause trouble" , "riot" .)