The most common and most likely answer to this crossword clue is the 9 letter word REDUCTION
I've seen this crossword clue in The Daily Telegraph
R
E
D
U
C
T
I
O
N
More clues leading to the result REDUCTION
- Lessening of dose perhaps cured it, on receiving treatment
- Introduce nutty dip
- Introduce unfortunate cutback
- Disconcert discounter discounting small discount
- Introduce new price cut
- Row about limited edition – from nine to five, say?
- Discount, third off? Er, could be
- Drop journalist into protest
- Introduce woeful cut
- Introduce changes for cut in capacity
Buddy explains!

The straight part
We know that "Cut" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cut = reduction.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 REDUCTION mean?
REDUCTION noun- The act, process, or result of reducing.
- The amount or rate by which something is reduced, e.g. in price.
- A reaction in which electrons are gained and valence is reduced; often by the removal of oxygen or the addition of hydrogen.
- The process of rapidly boiling a sauce to concentrate it.
- The rewriting of an expression into a simpler form.
- (computability theory) a transformation of one problem into another problem, such as mapping reduction or polynomial reduction.
- An arrangement for a far smaller number of parties, e.g. a keyboard solo based on a full opera.
- (phenomenology) A philosophical procedure intended to reveal the objects of consciousness as pure phenomena. (See phenomenological reduction.)
- A medical procedure to restore a fracture or dislocation to the correct alignment.