The most common and most likely answer to this crossword clue is the 6 letter word HATRED
I've seen this crossword clue in The Times
H
A
T
R
E
D
More clues leading to the result HATRED
- Bowler perhaps crimson, showing animosity
- Extreme dislike of bowler, perhaps flushed with anger
- A contribution to what reduces hostility
- Dearth, badly managed, causing enmity
- Abhorrence in Balmoral for one commie
- What 9 shows daughter after 5
- Cardinal swaps sides, creating loathing
- Junction? Went fast round it in spite
- Intense dislike of “Fiery” bowler possibly opening?
- Dislike tangled thread
Buddy explains!

The straight part
We know that "hostility" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hostility = hatred.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 HATRED mean?
HATRED noun- Strong aversion; intense dislike