The most common and most likely answer to this crossword clue is the 10 letter word PIG-HEADED
I've seen this crossword clue in Independent
P
I
G
-
H
E
A
D
E
D
More clues leading to the result PIG-HEADED
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 PIG-HEADED mean?
PIG-HEADED adjective- Obstinate and stubborn to the point of stupidity.