The most common and most likely answer to this crossword clue is the 9 letter word TERRIFIED
I've seen this crossword clue in The Daily Telegraph
T
E
R
R
I
F
I
E
D
More clues leading to the result TERRIFIED
- Mistake if kept in bound and frightened
- Playing dirtier ultimately, if one is in a blue funk
- Bound to cover slip, if alarmed
- Frightened to make a mistake every time one’s introduced to a man
- Fearful, perhaps, if retired
- Restrained catching stray, if fearful
- Bound to admit blunder, if scared
- Scared by blunder provided, held by United
- Bound to admit mistake if in great fear
- Alarmed if retired, pottering about
Buddy explains!

The straight part
We know that "fearful" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case fearful = terrified.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 TERRIFIED mean?
TERRIFIED adjective- Extremely frightened.
- To frighten greatly; to fill with terror.
- To menace or intimidate.
- To make terrible.