The most common and most likely answer to this crossword clue is the 11 letter word UNPUBLISHED
I've seen this crossword clue in The Times
U
N
P
U
B
L
I
S
H
E
D
Buddy explains!
The straight part
We know that "without an outlet for it" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case without an outlet for it = unpublished.The cryptic/wordplay part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
UNPUBLISHED adjective- Not published.