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wasteful
adj
1.
inefficient in use of time and effort and materials
uneconomical
Derived from:
wastefulness
2.
tending to squander and waste
feespilling
losel
spareless
unthrift
unthrifty
wanthriftish
wanthrifty
wasty
Antonym:
thrifty
Derived from:
wastefulness
3.
laying waste
Derived from:
wastefulness