Next real drunk outside (8)
I believe the answer is:
external
'outside' is the definition.
('external' is associated in meaning with 'outside')
'next real drunk' is the wordplay.
'drunk' indicates anagramming the letters.
'next'+'real'='nextreal'
'nextreal' anagrammed gives 'EXTERNAL'.
(Other definitions for external that I've seen before include "Outer" , "abroad" , "Coming from outside" , "Belonging to the outside" , "Outward" .)