The most common and most likely answer to this crossword clue is the 11 letter word STANDOFFISH
S
T
A
N
D
O
F
F
I
S
H
More clues leading to the result STANDOFFISH
- Rugby player is hard and cold
- Upon which, catch cold
- Cold stall in Billingsgate?
- Cold – it’s often covered in ice!
- Cold seafood bedecked stall?
- Antisocial Billingsgate trader’s behind it?
- Cool part of seafood exhibition?
- Distant position of angle
- Cool place in Billingsgate Market?
- Unfriendly resistance put up by school?
Buddy explains!

The straight part
We know that "withdrawn" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case withdrawn = standoffish.The cryptic/wordplay part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 STANDOFFISH mean?
STANDOFFISH adjective- Aloof; reserved; unsociable and unfriendly.