We linger outside still (7)
I believe the answer is:
however
'still' is the definition.
(I know that still can be written as however)
'we linger outside' is the wordplay.
'linger' becomes 'hover' (synonyms).
'outside' is an insertion indicator.
'we' going within 'hover' is 'HOWEVER'.
(Other definitions for however that I've seen before include "still" , "Notwithstanding" , "Though" , "Nevertheless" , "at the same time" .)