Angry drunk advanced (4)
I believe the answer is:
high
This clue could be a double definition.
'angry drunk' is the first definition.
'high' can be an answer for 'drunk' (I've seen this before). I am not certain of the 'angry' bit.
'advanced' is the second definition.
(similar in meaning)
Can you help me to learn more?
(Other definitions for high that I've seen before include "Important; drugged" , "First-rate - drunk" , "In slang, under the influence of drugs" , "Oxford street - drunk" , "Large, complex (and shady?) money transactions" .)