Better bags right for waste (7)
I believe the answer is:
fritter
'waste' is the definition.
(frittering is a kind of wasting)
'better bags right' is the wordplay.
I cannot really see how this works, but
'right' could be 'r' (abbreviation) and 'r' is found in the answer.
The remaining letters 'fitter' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
'for' is the link.
Can you help me to learn more?
(Other definitions for fritter that I've seen before include "blow" , "while away?" , "Spend money frivolously" , "bit of batter" , "Waste time or money on frivolities" .)