generosity (n.)youdaoicibaDictYouDict[generosity 词源字典]
early 15c., "nobility, goodness of race," from Latin generositatem (nominative generositas) "nobility, excellence, magnanimity," from generosus "of noble birth; magnanimous" (see generous). Meaning "munificence, quality of being generous" is recorded from 1670s.[generosity etymology, generosity origin, 英语词源]