Caravanner’s anger, with water level out of control (3,3,9)
I believe the answer is:
new age traveller
'caravanner's' is the definition.
I know nothing about this answer so I cannot tell whether this works.
'anger with water level out of control' is the wordplay.
'with' means one lot of letters go next to another.
'out of control' indicates anagramming the letters.
'anger'+'water'+'level'='angerwaterlevel'
'angerwaterlevel' with letters rearranged gives 'NEW AGE TRAVELLER'.
Can you help me to learn more?
(Another definition for new age traveller that I've seen is " unconventional, rootless one".)