The most common and most likely answer to this crossword clue is the 9 letter word AFTERMATH
I've seen this crossword clue in The Times
A
F
T
E
R
M
A
T
H
More clues leading to the result AFTERMATH
- Subsequent events end in a religious expression I let loose
- Consequences of a fine period of work at Harrow, primarily
- Later consequences of getting me that far drunk
- . American fellow’s semester at Harvard’s beginning to get results
- Wake father — am getting worried about time
- Art thief: ‘Am I not worried by consequences?’
- Consequences of pursuing US subject
- At the farm produced second crop
- Crossbreeding at the farm will have later consequences
- The wake of the fart knocked over mother
Buddy explains!

The straight part
We know that "Subsequent events" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case subsequent events = aftermath.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 AFTERMATH mean?
AFTERMATH noun- A second mowing; the grass which grows after the first crop of hay in the same season.
- That which happens after, that which follows, usually of strongly negative connotation in most contexts, implying a preceding catastrophe.