Spoiled

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Middle English (in the sense ‘to plunder’): shortening of Old French espoille (noun), espoillier (verb), from Latin spoliare, from spolium ‘plunder, skin stripped from an animal’, or a shortening of despoil.

etymonline

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spoiled (adj.)

"over-indulged," 1640s, past-participle adjective from spoil (v.).