One in group with hesitation gets to hang around (6)
I believe the answer is:
loiter
'to hang around' is the definition.
('loiter' can be a synonym of 'hang around')
'one in group with hesitation' is the wordplay.
'one' becomes 'i' (Roman numeral).
'in' means one lot of letters goes inside another.
'group' becomes 'lot' (lot is a kind of group**).
'with hesitation' becomes 'er' (I've seen this in other clues).
'i' inserted inside 'lot' is 'loit'.
'loit'+'er'='LOITER'
'gets' acts as a link.
(Other definitions for loiter that I've seen before include "Hang about, with 25 dn perhaps" , "lounge" , "Hang around, perhaps with intent" , "Linger - lurk" , "Hang around, lurk" .)