Wāste'ful, a.
a. 1. Full of waste; destructive to property; ruinous; as, wasteful practices or negligence; wasteful expenses.
Sense 2. Expending property, or that which is valuable, without necessity or use; lavish; prodigal; as, a wasteful person.
Sense 3. Lying waste; desolate; unoccupied; untilled; uncultivated. [Obs.] “In wilderness and *wasteful deserts strayed.” Spenser.
Synonyms—Lavish; profuse; prodigal; extravagant.