Incensed? Aim to contain fury (7)
I believe the answer is:
enraged
'incensed?' is the definition.
(I've seen this before)
'aim to contain fury' is the wordplay.
'aim' becomes 'end' (both can mean a goal or purpose).
'to contain' indicates putting letters inside.
'fury' becomes 'rage' (synonyms).
'end' going around 'rage' is 'ENRAGED'.
(Other definitions for enraged that I've seen before include "upset" , "Angered (anag) - extremely so!" , "Infuriated, made mad" , "Greatly angered" , "Made very angry" .)