unspoiled (adj.)youdaoicibaDictYouDict[unspoiled 词源字典]
c. 1500, "not plundered," from un- (1) "not" + past participle of spoil (v.). Meaning "not deteriorated" is attested from 1732. A verb unspoil is attested from c. 1400, but it meant "despoil."[unspoiled etymology, unspoiled origin, 英语词源]