Community member, mostly horrible, wanting drink in pub? (8)
I believe the answer is:
villager
'community member' is the definition.
'mostly horrible wanting drink in pub?' is the wordplay.
'mostly' means to remove the last letter.
'horrible' becomes 'vile' (I've seen this before).
'wanting' is a charade indicator (letters next to each other).
'drink in pub?' becomes 'lager'.
'vile' with its final letter taken away is 'vil'.
'vil'+'lager'='VILLAGER'
(Other definitions for villager that I've seen before include "Hamlet character" , "Denizen of a small settlement" , "One in Hamlet" , "not a City type" , "Denizen of a hamlet" .)