Unspoiled comes from un- ('not') + spoiled, from spoil, from Old French espoillier, from Latin spoliare ('to strip, plunder'), from spolium ('hide, booty'). In current use it is an adjective meaning "not damaged, ruined, or overdeveloped". That sense is explained by the older material without requiring a speculative semantic step: the inherited or borrowed base supplies the field of meaning, while the English formation fixes its modern role. The prefix un- is negative or privative, marking the absence, denial, or opposite of the base idea. The surface form is compositional: its joined elements remain visible in the modern word. The historical chain includes Old English un- and Latin spoliare. Related English forms include spoil, spoiled, and unspoilt. As a result, the modern word is best read as a negative, privative, or reversative formation built on a historically older base.