wasteful
1. [ adjective ] inefficient in use of time and effort and materials
Synonyms: uneconomical
Examples:

"a clumsy and wasteful process" "wasteful duplication of effort" "uneconomical ebb and flow of power"

Related terms: inefficient
2. [ adjective ] tending to squander and waste
Related terms: thrifty extravagant uneconomical pound-foolish improvident
3. [ adjective ] laying waste
Examples:

"when wasteful war shall statues overturn"- Shakespeare

Related terms: destructive
Similar spelling:   wastefully
  waste_pipe
  wastebin