Needless use (5)
I believe the answer is:
waste
(Other definitions for waste that I've seen before include "Spend thoughtlessly or use inefficiently" , "Use to no purpose" , "Fritter away" , "Refuse, garbage, rubbish" , "Uncultivated area" .)
I believe the answer is:
waste
(Other definitions for waste that I've seen before include "Spend thoughtlessly or use inefficiently" , "Use to no purpose" , "Fritter away" , "Refuse, garbage, rubbish" , "Uncultivated area" .)