Remaining (8)
(Other definitions for nett that I've seen before include "After making deductions" , "Clear of tax" , "Opposite of gross" , "After taxes" , "cleared of all charges" .)
'remaining' is the definition.
(I know that remaining can be written as left)
This is all the clue.
(Other definitions for left that I've seen before include "set out" , "Punch, perhaps" , "The side of socialism" , "Felt about for direction" , "The sinister side" .)
'remaining' is the definition.
(I know that remaining can be written as residual)
This is all the clue.
(Other definitions for residual that I've seen before include "Remaining at the end" , "'Remaining, left over (8)'" , "surplus" , "unused" , "Pertaining to what is left over" .)
'remaining' is the definition.
(I know that remaining can be written as leftover)
This is the entire clue.
(Other definitions for leftover that I've seen before include "Remnant" , "something you'd keep on the plate!" , "Remaining" , "Finally unused" , "What remains" .)
'remaining' is the definition.
('stay' can be a synonym of 'remain')
This is all the clue.
(Another definition for staying that I've seen is " Remaining in the same place".)