Definitions of waste on the Web:

• spend thoughtlessly; throw away; "He wasted his inheritance on his insincere friends"; "You squandered the opportunity to get and advanced degree"
• use inefficiently or inappropriately; "waste heat"; "waste a joke on an unappreciative audience"
• get rid of; "We waste the dirty water by channeling it into the sewer"
• run off as waste; "The water wastes back into the ocean"
• neutralize: get rid of (someone who may be a threat) by killing; "The mafia liquidated the informer"; "the double agent was neutralized"
• consume: spend extravagantly; "waste not, want not"
• any materials unused and rejected as worthless or unwanted; "they collect the waste once a week"; "much of the waste material is carried off in the sewers"
• pine away: lose vigor, health, or flesh, as through grief; "After her husband died, she just pined away"
• useless or profitless activity; using or expending or consuming thoughtlessly or carelessly; "if the effort brings no compensating gain it is a waste"; "mindless dissipation of natural resources"
• cause to grow thin or weak; "The treatment emaciated him"
• thriftlessness: the trait of wasting resources; "a life characterized by thriftlessness and waste"; "the wastefulness of missed opportunities"
• lay waste to: cause extensive destruction or ruin utterly; "The enemy lay waste to the countryside after the invasion"
• barren: an uninhabited wilderness that is worthless for cultivation; "the barrens of central Africa"; "the trackless wastes of the desert"
• become physically weaker; "Political prisoners are wasting away in many prisons all over the world"
• (law) reduction in the value of an estate caused by act or neglect
  wordnetweb.princeton.edu/perl/webwn