impunity (n.)youdaoicibaDictYouDict[impunity 词源字典]
1530s, from Middle French impunité (14c.) and directly from Latin impunitatem (nominative impunitas) "freedom from punishment, omission of punishment," also "rashness, inconsideration," from impunis "unpunished, without punishment," from assimilated form of in- "not, opposite of" (see in- (1)) + poena "punishment" (see penal).[impunity etymology, impunity origin, 英语词源]