The most common and most likely answer to this crossword clue is the 8 letter word BELLYFUL
I've seen this crossword clue in The Daily Telegraph
B
E
L
L
Y
F
U
L
More clues leading to the result BELLYFUL
Buddy explains!
The straight part
We know that "Appetite satisfied" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case appetite satisfied = bellyful.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 BELLYFUL mean?
BELLYFUL noun- Enough to fill one's belly; a large portion of food eaten.
- An undesirably large quantity of something.