The most common and most likely answer to this crossword clue is the 6 letter word JUMBLE
I've seen this crossword clue in Financial Times
J
U
M
B
L
E
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 JUMBLE mean?
JUMBLE noun- A mixture of unrelated things.
- Items for a rummage sale.
- A rummage sale.
- To mix or confuse.
- To meet or unite in a confused way.
- A small, thin, sugared cake, usually ring-shaped.