Raging (8)
'raging' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for furious that I've seen before include "Raging" , "how creditor feels?" , "Livid" , "Seeing red" , "Extremely angry" .)
(Other definitions for wrathful that I've seen before include "Infuriated, incensed" , "Extremely angry" .)
(Other definitions for bull that I've seen before include "Centre of a target" , "Animal on target?" , "Cow's mate" , "Official papal edict" , "Bovine charger?" .)