The most common and most likely answer to this crossword clue is the 9 letter word UNBEKNOWN
U
N
B
E
K
N
O
W
N
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 UNBEKNOWN mean?
UNBEKNOWN adjective- Not beknown.