The most common and most likely answer to this crossword clue is the 5 plus 4 letter word STONE COLD
I've seen this crossword clue in The Guardian
S
T
O
N
E
C
O
L
D
More clues leading to the result STONE COLD
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.
Crossword Answer definitions
STONE COLD adjective- Completely cold.
- Without emotion.