Go away confused cats (4)
I believe the answer is:
scat
'go away' is the definition.
(informal term meaning to leave a place)
'confused cats' is the wordplay.
'confused' indicates an anagram.
'cats' is an anagram of 'SCAT'.
(Other definitions for scat that I've seen before include "Animal droppings - small silvery fish" , "Type of jazz singing - be off!" , "Get away with cats" , "Dropping" , "Improvised jazz singing" .)