The most common and most likely answer to this crossword clue is the 12 letter word HORSEMANSHIP
I've seen this crossword clue in The Daily Telegraph
H
O
R
S
E
M
A
N
S
H
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P
More clues leading to the result HORSEMANSHIP
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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 HORSEMANSHIP mean?
HORSEMANSHIP noun- The skill of riding a horse, and sometimes of training and managing horses.