Cryptic crossword clue
Angry man I left after fuss about breadth of belly 9

The most common and most likely answer to this crossword clue is the 9 letter word ABDOMINAL

I've seen this crossword clue in Financial Times
A
B
D
O
M
I
N
A
L

Buddy explains!

The straight part
We know that "of belly" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case of belly = abdominal.
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 ABDOMINAL mean?

ABDOMINAL noun
  1. A fish of the order Abdominales.
  2. (usually plurale tantum) An abdominal muscle.
ABDOMINAL adjective
  1. Of or pertaining to the abdomen; ventral.
  2. Having the ventral fins under the abdomen and behind the pectoral fins.
  3. Ventral, in describing a fin.
  4. Belonging to the order Abdominales of fish.

Latest crossword clues with full explanations