Being from the north, leaving clubs stupefied by drink (7)
I believe the answer is:
sottish
'stupefied by drink' is the definition.
The answer and definition are not the same part of speech. However, past participle verbs and adjectives sometimes mean the same thing.
'being from the north leaving clubs' is the wordplay.
'being' becomes 'sot' (sot is a kind of being).
'from' is a charade indicator (letters next to each other).
'the north leaving clubs' becomes 'tish' (I can't explain this - if you can you should believe this answer much more).
'sot'+'tish'='SOTTISH'
Can you help me to learn more?
(Other definitions for sottish that I've seen before include "Drunken" , "drunk, usually" , "Like drunk" , "Habitually drunk" .)