Cause to feel hurt (6)
I believe the answer is:
offend
'cause to feel hurt' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for offend that I've seen before include "Be disagreeable to" , "Be displeasing to" , "cause displeasure or do wrong" , "Hurt someone's feelings" , "Insult - sin" .)