ravager

from The Collaborative International Dictionary of English v.0.48

Ravager \Rav"a*ger\ (-[asl]*j[~e]r), n.
   One who, or that which, ravages or lays waste; spoiler.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

26 Moby Thesaurus words for "ravager":
      betrayer, debaucher, deceiver, defiler, depredator, despoiler,
      forager, forayer, freebooter, looter, marauder, pillager,
      plunderer, raider, raper, rapist, rapparee, ravisher, reiver,
      rifler, sacker, seducer, spoiler, spoliator, violator, wrecker

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