The most common and most likely answer to this crossword clue is the 9 letter word ITERATION
I've seen this crossword clue in The Sunday Telegraph
I
T
E
R
A
T
I
O
N
More clues leading to the result ITERATION
- Bungling Boris maybe completely lost — it has been said before
- . It comes to a point where dole is repeated over and over
- Independent note helping another run- through
- Repeating time after time after time, I love breaking in
- Article finally reduced, helping to make new version
- Coming round again, I rotate in circles
- Bum note? Aria ended prematurely — it bears repetition
- Doing something repeatedly — over time, that is helping
- Repetition of appeal against European quota
- Version control follows IT guideline, essentially
Buddy explains!

The straight part
We know that "Doing something repeatedly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case doing something repeatedly = iteration.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 ITERATION mean?
ITERATION noun- Recital or performance a second time; repetition.
- A variation or version.
- The use of repetition in a computer program, especially in the form of a loop.
- A single repetition of the code within such a repetitive process.