The most common and most likely answer to this crossword clue is the 7 letter word WHOEVER
I've seen this crossword clue in The Daily Telegraph
W
H
O
E
V
E
R
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 WHOEVER mean?
WHOEVER pronoun- (interrogative) Who ever: an emphatic form of who.
- (fused relative) Any person or persons that.
- (fused relative) The person that (no matter who).
- Regardless of the person or persons that.
- Any person or persons.
- Misspelling of who ever other than in interrogative use.