Wander off having no right to linger (4)
I believe the answer is:
stay
'to linger' is the definition.
(I've seen this in another clue)
'wander off having no right' is the wordplay.
'wander off' becomes 'stray' (I've seen this in another clue).
'having no' indicates named letters should be taken away.
'right' becomes 'r' (common abbreviation).
'stray' with 'r' removed is 'STAY'.
(Other definitions for stay that I've seen before include "Thin strip used to stiffen a garment" , "Remain behind" , "last" , "Supporting rod" , "control" .)