The most common and most likely answer to this crossword clue is the 12 letter word DECAPITATION
I've seen this crossword clue in The Daily Telegraph
D
E
C
A
P
I
T
A
T
I
O
N
More clues leading to the result DECAPITATION
Buddy explains!
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 DECAPITATION mean?
DECAPITATION noun- Beheading; the act of beheading or decapitating
- The ousting or destruction of the ruling body of a government or other organization.
- The unseating of a senior politician.