The most common and most likely answer to this crossword clue is the 9 letter word DISMEMBER
I've seen this crossword clue in The Guardian
D
I
S
M
E
M
B
E
R
More clues leading to the result DISMEMBER
- Is married during last month, abandoning the City quarter
- Cut up diamonds with an adherent of Daesh?
- Break up sad initially, overwhelmed by faint remnant of passion
- Separate sulphur in faintly glowing coal
- Make legless brides dance round setter?
- Break up most of dismal coal while it glows
- Remove arms from girl’s political representative?
Buddy explains!

The straight part
We know that "Cut up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cut up = dismember.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 DISMEMBER mean?
DISMEMBER verb- To remove the limbs of.
- To cut or otherwise divide something into pieces.