The most common and most likely answer to this crossword clue is the 8 letter word ABHORRED
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The straight part
We know that "With horror shrunk from" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case with horror shrunk from = abhorred.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does ABHORRED mean?
ABHORRED verb- To regard with horror or detestation; to shrink back with shuddering from; to feel excessive repugnance toward; to detest to extremity; to loathe.
- To fill with horror or disgust.
- To turn aside or avoid; to keep away from; to reject.
- (canon law) To protest against; to reject solemnly.
- To shrink back with horror, disgust, or dislike; to be contrary or averse; construed with from.
- Differ entirely from.
- Strongly disliked: hated, despised.
- Horrified.