The most common and most likely answer to this crossword clue is the 7 letter word MACABRE
I've seen this crossword clue in Financial Times
M
A
C
A
B
R
E
More clues leading to the result MACABRE
- Ghastly murder oddly around area north of Hackney?
- Ghastly horse going without its carriage?
- Carriage cutting horse in two — it's gruesome
- Ghastly waterproof sailor has on
- Carriage cutting horse in two — that's ghastly
- Gruesome as taxi is squashed by horse
- Hansom invested in horse that’s black
- Dark coat on wild bear
- Gruesome, when taxi goes into horse
- Ghastly taxi drawn by horse
Buddy explains!

The straight part
We know that "Ghastly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case ghastly = macabre.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 MACABRE mean?
MACABRE adjective- Representing or personifying death.
- Obsessed with death or the gruesome.
- Ghastly, shocking, terrifying.