The most common and most likely answer to this crossword clue is the 13 letter word DISCRIMINATED
I've seen this crossword clue in The Daily Telegraph
D
I
S
C
R
I
M
I
N
A
T
E
D
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.
Crossword Answer definitions
DISCRIMINATED verb- To make distinctions.
- (construed with against) To make decisions based on prejudice.
- To set apart as being different; to mark as different; to separate from another by discerning differences; to distinguish.