wasteful
adj.using more of something than you need, such as money, time, or food. It describes a person or action that throws away things that are still useful.
adj.using or expending something of value carelessly, extravagantly, or to no purpose. Often used to describe habits, processes, or individuals that fail to conserve resources.
“Leaving the lights on all day is very wasteful.”
“The manager criticized the wasteful spending on luxury office furniture while the staff lacked basic supplies.”
“Environmentalists argue that the current model of fast fashion is inherently wasteful, as it encourages consumers to discard garments after only a few uses.”
Typically used as an attributive adjective before a noun or predicatively after a linking verb like 'be' or 'seem'.
From Middle English wastful; equivalent to waste + -ful.
Etymology adapted from Wiktionary, available under CC BY-SA 4.0.