Executive rage — animal unleashed (10)
I believe the answer is:
managerial
'executive' is the definition.
(thesaurus)
'rage animal unleashed' is the wordplay.
'unleashed' is an anagram indicator (letters are unleashed from their original order).
'rage'+'animal'='rageanimal'
'rageanimal' is an anagram of 'MANAGERIAL'.
(Other definitions for managerial that I've seen before include "executive" , "On board" , "of top staff" , "In administrative control" .)