The most common and most likely answer to this crossword clue is the 9 letter word INCORRECT
I've seen this crossword clue in The Times
I
N
C
O
R
R
E
C
T
More clues leading to the result INCORRECT
- A missing Citroen car crashed? Wrong
- Trendy church's leader, silly rector is wrong
- Wrong corner – it bends around college
- Improper behaviour finally stops in Centre Court
- One soldier getting right drunk, do you say? Wrong
- I arranged concert about right? Wrong
- I broadcast concert around end of September? Not right!
- In bed eating bits of ravioli, risotto, eggs and crisps? That’s improper
- Getting cross, perhaps, in my play area before time
- Right to be entertained by new concerti? Wrong
Buddy explains!

The straight part
We know that "wrong" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case wrong = incorrect.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 INCORRECT mean?
INCORRECT adjective- Not correct; erroneous or wrong.
- Faulty or defective.
- Inappropriate or improper.