It’s able to turn wild (7)
I believe the answer is:
bestial
'wild' is the definition.
(thesaurus)
'it's able to turn' is the wordplay.
'to turn' indicates an anagram.
'its'+'able'='itsable'
'itsable' is an anagram of 'BESTIAL'.
(Other definitions for bestial that I've seen before include "for animals?" , "Savage" , "Brutish or cruel, hardly human" , "Animal-like" , "Tables I create, being brutal or cruel" .)