Object of abhorrence (8)
I believe the answer is:
anathema
'object of abhorrence' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for anathema that I've seen before include "Curse of the Church, or detested person" , "Execration" , "It's detested or abhorred" , "Bete noire" , "Bete noir" .)