The most common and most likely answer to this crossword clue is the 7 letter word DISLIKE
I've seen this crossword clue in The Guardian
D
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S
L
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More clues leading to the result DISLIKE
Buddy explains!

The straight part
We know that "hostile feeling" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hostile feeling = dislike.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 DISLIKE mean?
DISLIKE noun- An attitude or a feeling of distaste or aversion.
- (usually in the plural) Something that a person dislikes (has or feels aversion to).
- An individual vote showing disapproval of, or lack of support for, something posted on the Internet.
- To displease; to offend. (In third-person only.)
- To have a feeling of aversion or antipathy towards; not to like.
- To leave a vote to show disapproval of, or lack of support for, something posted on the Internet.