Obsessive elf in film (6)
I believe the answer is:
phobic
'obsessive' is the definition.
Both the answer and definition are adjectives. Perhaps there's an association between them I don't understand?
'elf in film' is the wordplay.
'elf' becomes 'hob' ('hob' can be a synonym of 'elf').
'in' is an insertion indicator.
'film' becomes 'pic' (I've seen this in other clues).
'hob' going within 'pic' is 'PHOBIC'.
Can you help me to learn more?
(Other definitions for phobic that I've seen before include "suffering morbid fear" , "Suffering irrational fears" , "With an irrational fear" .)