The most common and most likely answer to this crossword clue is the 10 letter word COMPLETION
C
O
M
P
L
E
T
I
O
N
Buddy explains!
The straight part
We know that "Finish" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case finish = completion.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 COMPLETION mean?
COMPLETION noun- The act or state of being or making something complete; conclusion, accomplishment.
- The conclusion of an act of conveyancing concerning the sale of a property.
- A forward pass that is successfully caught by the intended receiver.
- The act of making a metric space complete by adding points.
- The space resulting from such an act.