The most common and most likely answer to this crossword clue is the 6 letter word UNSHOD
I've seen this crossword clue in The Daily Telegraph
U
N
S
H
O
D
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 UNSHOD mean?
UNSHOD adjective- Not shod; without shoes.
- Of a vehicle, not fitted with tyres on the wheels.
- To remove a shoe (especially a horseshoe) from.