The most common and most likely answer to this crossword clue is the 2 plus 4 plus 8 letter word AT ONES DISPOSAL
A
T
O
N
E
S
D
I
S
P
O
S
A
L
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.