waste

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"

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"

the trait of wasting resources; "a life characterized by thriftlessness and waste"; "the wastefulness of missed opportunities"

an uninhabited wilderness that is worthless for cultivation; "the barrens of central Africa"; "the trackless wastes of the desert"

(law) reduction in the value of an estate caused by act or neglect

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"

get rid of (someone who may be a threat) by killing; "The mafia liquidated the informer"; "the double agent was neutralized"

spend extravagantly; "waste not, want not"

cause to grow thin or weak; "The treatment emaciated him"

cause extensive destruction or ruin utterly; "The enemy lay waste to the countryside after the invasion"