We get involved with hairy bats (7)
I believe the answer is:
haywire
'bats' is the definition.
(synonyms)
'we get involved with hairy' is the wordplay.
'get involved with' is an anagram indicator.
'we' mixed up with 'hairy' gives 'HAYWIRE'.
(Other definitions for haywire that I've seen before include "All over the shop" , "Mad" , "Malfunctioning badly" , "Chaotic" , "Disorganised" .)