The most common and most likely answer to this crossword clue is the 6 letter word CLASSY
I've seen this crossword clue in Financial Times
C
L
A
S
S
Y
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 CLASSY mean?
CLASSY adjective- Elegant, highly stylish or fashionable.
- Of a superior type; especially, exhibiting admirable personal qualities.