The most common and most likely answer to this crossword clue is the 5 plus 4 letter word CLOSE DOWN
I've seen this crossword clue in The Times
C
L
O
S
E
D
O
W
N
More clues leading to the result CLOSE DOWN
- Stop trading in neighbouring county
- Stop idiot necking incorrect dose
- Charlie and Miss Germany have come to a standstill
- Stop broadcasting cuckoo’s first moult
- Discontinue dose, foolishly swallowed by buffoon
- Near to getting depressed? Gets wind up!
- Fold near to the bottom
- Sort of shop to have to cease trading
- Shut top of coop, then moult?
- Stop working when circus employee catches nasty dose
Buddy explains!
The straight part
We know that "Stop trading" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case stop trading = close down.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.