The most common and most likely answer to this crossword clue is the 6 letter word BECOME
I've seen this crossword clue in The Daily Telegraph
B
E
C
O
M
E
More clues leading to the result BECOME
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 BECOME mean?
BECOME verb- To arrive, come (to a place).
- To come about; happen; come into being; arise.
- Begin to be; turn into.
- To be proper for; to beseem.
- Of an adornment, piece of clothing etc.: to look attractive on (someone).