acquittal (n.)youdaoicibaDictYouDict[acquittal 词源字典]
early 15c., "payment of debt or retribution;" see acquit + -al (2). Sense of "a release from debt or obligation" is from mid-15c.; that of "freeing from charge or offense" (by legal process) is from 1530s.[acquittal etymology, acquittal origin, 英语词源]