The most common and most likely answer to this crossword clue is the 11 letter word PLAGIARISED
I've seen this crossword clue in The Daily Telegraph
P
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A
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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.
What does PLAGIARISED mean?
PLAGIARISED verb- To use, and pass off as one's own, someone else's writing, speech, ideas, or other intellectual or creative work, especially in an academic context; to commit plagiarism.