squandering

nouns

spending resources lavishly and wastefully
"more wasteful than the squandering of time"
squandering
is derived from
squander
is a type of (narrower)
useless or profitless activity; using or expending or consuming thoughtlessly or carelessly
"if the effort brings no compensating gain it is a waste"; "mindless dissipation of natural resources"
dissipation, waste, wastefulness