An old barbarian forgot his part (4)
I believe the answer is:
goth
'an old barbarian' is the definition.
'Goth' can be an answer for 'barbarian' (synonyms). I am not certain of the 'an old' bit.
'forgot his part' is the wordplay.
'part' says the answer is hidden in the clue.
'GOTH' is hidden within 'forgot his'.
Can you help me to learn more?
(Other definitions for goth that I've seen before include "Rock music style" , "Teutonic barbarian" , "Teutonic invader of the Roman Empire" , "Uncivilised type" , "Youngster clad in black" .)