The most common and most likely answer to this crossword clue is the 8 letter word EDIFYING
I've seen this crossword clue in Financial Times
E
D
I
F
Y
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G
More clues leading to the result EDIFYING
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 EDIFYING mean?
EDIFYING verb- To build, construct.
- To instruct or improve morally or intellectually.
- Edification
- That educates, informs, illuminates or instructs.
- That enlightens or uplifts.