Utter fury supporting hospital department (6)
I believe the answer is:
entire
'utter' is the definition.
(thesaurus)
'fury supporting hospital department' is the wordplay.
'fury' becomes 'ire' (I've seen this before).
'supporting' is a charade indicator (letters next to each other) (in a down clue, some letters go below others).
'hospital department' becomes 'ent'.
'ire' put after 'ent' is 'ENTIRE'.
(Other definitions for entire that I've seen before include "Whole; absolute" , "Envelope" , "in one piece" , "Whole - undamaged" , "Full, intact" .)