The most common and most likely answer to this crossword clue is the 13 letter word GRATIFICATION
G
R
A
T
I
F
I
C
A
T
I
O
N
Buddy explains!

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 GRATIFICATION mean?
GRATIFICATION noun- The act of gratifying, or pleasing, either the mind, the taste, or the appetite.
- A feeling of pleasure; satisfaction
- A reward; a gratuity.