The most common and most likely answer to this crossword clue is the 2 plus 3 plus 2 plus 1 plus 6 letter word AS FIT AS A FIDDLE
A
S
F
I
T
A
S
A
F
I
D
D
L
E
Buddy explains!
The straight part
We know that "Fine" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fine = as fit as a fiddle.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.