The most common and most likely answer to this crossword clue is the 5 plus 4 letter word RAISE HELL
I've seen this crossword clue in Independent
R
A
I
S
E
H
E
L
L
More clues leading to the result RAISE HELL
- Start to discuss great suffering and complain furiously
- Here is tall criminal with no end of intent to cause trouble
- Commendation lacking at beginning, he will protest heatedly
- With an increase in wages, this man’s going to cause chaos
- Commend oil company removing leaders – and cause a lot of trouble
- Object forcefully as her allies crumbled
- Shell uncovered in Israel exploded to cause a disturbance
- Make a disturbance to give a lift to the underworld
- She, all stirred up with ire, is to create a stink
- Headless supporter is English — that man will cause trouble
Buddy explains!
The straight part
We know that "cause a lot of trouble" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case cause a lot of trouble = raise hell.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.