Still into finer things (5)
I believe the answer is:
inert
'still' is the definition.
(I've seen this in another clue)
'into finer things' is the wordplay.
'into' indicates a hidden word.
'INERT' is hidden within 'finer things'.
(Other definitions for inert that I've seen before include "Devoid of motion or change" , "Passive, immobile" , "Motionless or inanimate" , "Dormant, lifeless" , "Chemically unreactive" .)