The most common and most likely answer to this crossword clue is the 9 letter word ABHORRENT
I've seen this crossword clue in The Times
A
B
H
O
R
R
E
N
T
More clues leading to the result ABHORRENT
- Hateful, earthborn eccentric
- Toppled on the bar, clutching last of liqueur? Disgusting
- Violent crime spate initially ignored — detestable!
- Criminal ran brothel, mostly obscene
- Horrible injury from fighting? Men split
- . Repulsive brother an abomination
- A brother dancing around noon is repulsive
- A criminal besetting men within hour is loathsome
- Born hater, unusually detestable
- Heading for Baghdad or Tehran, travelling’s awful
Buddy explains!

The straight part
We know that "Hateful" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hateful = abhorrent.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 ABHORRENT mean?
ABHORRENT adjective- Inconsistent with, or far removed from, something; strongly opposed
- Contrary to something; discordant.
- Abhorring; detesting; having or showing abhorrence; loathing.
- Detestable or repugnant.