Relating to the arts (8)
I believe the answer is:
cultural
'relating to the arts' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for cultural that I've seen before include "Aesthetic - ethnic" , "Relating to a society's shared knowledge and values" , "To do with the arts or learning" , "Relating to the arts and manners of a group" , "Artistic" .)