The Collaborative International Dictionary of English v.0.48:

despoliation \de*spo`li*a"tion\, n. [L. despoliatio. See
   Despoil.]
   A stripping or plundering; spoliation. --Bailey.
   [1913 Webster]

WordNet (r) 3.0 (2006):

despoliation
    n 1: the act of stripping and taking by force [syn: spoil,
         spoliation, spoilation, despoilation, despoilment,
         despoliation]

Moby Thesaurus II by Grady Ward, 1.0:

88 Moby Thesaurus words for "despoliation":
   abomination, atrocity, bad, banditry, bane, befoulment, blight,
   bloodbath, blue ruin, breakup, brigandage, brigandism, carnage,
   consumption, corruption, crying evil, damage, damnation,
   decimation, defilement, depredation, desolation, despoiling,
   despoilment, destruction, detriment, devastation, direption,
   disintegration, disorganization, disruption, dissolution, evil,
   foraging, foray, freebooting, grievance, harm, havoc, hecatomb,
   holocaust, hurt, ill, infection, injury, looting, marauding,
   mischief, outrage, perdition, pillage, pillaging, plunder,
   plundering, poison, pollution, raid, raiding, ransacking, rape,
   rapine, ravage, ravagement, ravaging, ravishment, razzia, reiving,
   rifling, ruin, ruination, sack, sacking, shambles, slaughter,
   spoiling, spoliation, the worst, toxin, undoing, vandalism, venom,
   vexation, waste, woe, wrack, wrack and ruin, wreck, wrong