Dwell permanently (6)
I believe the answer is:
reside
'dwell permanently' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for reside that I've seen before include "Dwell in desire" , "Stay - desire (anag)" , "Desire (anag) - to live" , "'Live, dwell (6)'" , "Dwell permanently" .)