The most common and most likely answer to this crossword clue is the 10 letter word DEVELOPING
I've seen this crossword clue in The Daily Telegraph
D
E
V
E
L
O
P
I
N
G
More clues leading to the result DEVELOPING
Buddy explains!
The straight part
We know that "evolving" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case evolving = developing.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 DEVELOPING mean?
DEVELOPING verb- To change with a specific direction, progress.
- To progress through a sequence of stages.
- To advance; to further; to promote the growth of.
- To create.
- To bring out images latent in photographic film.
- To acquire something usually over a period of time.
- To place one's pieces actively.
- To cause a ball to become more open and available to be played on later. Usually by moving it away from the cushion, or by opening a pack.
- To change the form of (an algebraic expression, etc.) by executing certain indicated operations without changing the value.
- A process of development.
- In the process of development.
- Of a country: becoming economically more mature or advanced; becoming industrialized.