Scottish servant is back (4)
I believe the answer is:
hind
'is back' is the definition.
(synonyms)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for hind that I've seen before include "Female animal; at the back" , "Female beast" , "Rear - female deer" , "Be in front of this farm-worker" , "Rear - animal" .)