Hanging around region, lit badly (9)
I believe the answer is:
loitering
'hanging around' is the definition.
('loiter' can be a synonym of 'hang around')
'region lit badly' is the wordplay.
'badly' indicates an anagram (letters in the wrong order).
'region'+'lit'='regionlit'
'regionlit' with letters rearranged gives 'LOITERING'.
(Other definitions for loitering that I've seen before include "Hanging around or lurking" , "Lingering" .)