[1] : The Collaborative International Dictionary of English v.0.48

wasteful \waste"ful\, a.
   1. full of waste; destructive to property; ruinous; as,
      wasteful practices or negligence; wasteful expenses.
      1913 webster

   2. expending, or tending to expend, property, or that which
      is valuable, in a needless or useless manner; lavish;
      prodigal; as, a wasteful person; a wasteful disposition.
      1913 webster

   3. waste; desolate; unoccupied; untilled. obs.
      1913 webster

            in wilderness and wasteful desert strayed.
                                                  --spenser.
      1913 webster

   syn: lavish; profuse; prodigal; extravagant.
        1913 webster -- waste"fully, adv. --
        waste"fulness, n.
        1913 webster
see also:
waste"fully waste"fulness 

[2] : WordNet (r) 2.0

wastefully
     adv : to a wasteful manner or to a wasteful degree; "we are still
           prodigally rich compared to others" syn: prodigally
see also:
prodigally 

Wastefully >> W Words
Wastefully, definition of term: Wastefully
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