Scoffed after pub? It's natural (6)
I believe the answer is:
innate
'natural' is the definition.
(I've seen this before)
'scoffed after pub?' is the wordplay.
'scoffed' becomes 'ate' ('to scoff' is to eat).
'after' is a charade indicator (letters next to each other).
'pub?' becomes 'inn' (I've seen this before).
'ate' put after 'inn' is 'INNATE'.
'it's' is the link.
(Other definitions for innate that I've seen before include "quite natural" , "Inherent or inborn" , "Inborn, natural to (6)" , "not needing to be taught" , "instinctive ..." .)