meliorate (v.)youdaoicibaDictYouDict[meliorate 词源字典]
1550s, "to make better," back-formation from melioration or else from Late Latin melioratus, past participle of Latin meliorare "improve," from melior "better," used as comparative of bonus "good," but probably originally meaning "stronger," from PIE root *mel- "strong, great, numerous" (see multi-). Related: Meliorated; meliorating; melioration; meliorative.[meliorate etymology, meliorate origin, 英语词源]