Despicable type somewhat putting her off (3)
I believe the answer is:
rat
'despicable type' is the definition.
(I know this)
I can't explain the remainder of the clue.
(Other definitions for rat that I've seen before include "Destructive rodent" , "Rodent; informer (colloq.)" , "person doing shopping" , "Unpleasant character" , "Strike-breaker" .)