Fury about new diversity (5)
I believe the answer is:
range
'diversity' is the definition.
(thesaurus)
'fury about new' is the wordplay.
'fury' becomes 'rage' ('rage' can be a synonym of 'fury').
'about' means one lot of letters goes inside another.
'new' becomes 'n'.
'rage' going around 'n' is 'RANGE'.
(Other definitions for range that I've seen before include "Open land for livestock in the US" , "1 across [CLASSIFY]" , "Where to cook" , "Roam" , "Wander freely" .)