The Collaborative International Dictionary of English v.0.48:

Spoliate \Spo"li*ate\ (sp[=o]"l[i^]*[=a]t), v. t. & i. [imp. &
   p. p. Spoliated (-[=a]`t[e^]d); p. pr. & vb. n.
   Spoliating (-[=a]`t[i^]ng).] [L. spoliatus, p. p. of
   spoliare to spoil. See Spoil, v. t.]
   To plunder; to pillage; to despoil; to rob.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

27 Moby Thesaurus words for "spoliate":
   depredate, desecrate, desolate, despoil, devastate, devour, fleece,
   forage, foray, freeboot, gut, loot, maraud, pillage, plunder,
   prey on, raid, ransack, ravage, raven, ravish, reive, rifle, sack,
   spoil, sweep, waste