Current uprising is hard and ferocious (7)
I believe the answer is:
wolfish
'ferocious' is the definition.
(thesaurus)
'current uprising is hard' is the wordplay.
'current' becomes 'flow' ('flow' can be a synonym of 'current'**).
'uprising' says the letters should be written in reverse.
'hard' becomes 'h'.
'flow' written backwards gives 'wolf'.
'wolf'+'is'+'h'='WOLFISH'
'and' acts as a link.
(Other definitions for wolfish that I've seen before include "Ravenous" , "like Lupus?" .)