The most common and most likely answer to this crossword clue is the 11 letter word SUSTAINABLE
S
U
S
T
A
I
N
A
B
L
E
More clues leading to the result SUSTAINABLE
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 SUSTAINABLE mean?
SUSTAINABLE adjective- Able to be sustained.
- Able to be produced or sustained for an indefinite period without damaging the environment, or without depleting a resource; renewable.