mansuetude (n.)youdaoicibaDictYouDict[mansuetude 词源字典]
"tameness, gentleness, mildness," late 14c., from Latin mansuetudo "tameness, mildness, gentleness," noun of state from past participle stem of mansuescere "to tame," literally "to accustom to the hand," from manus "hand" (see manual (adj.)) + suescere "to accustom, habituate," from PIE *swdh-sko-, from *swedh- (see sodality), extended form of root *s(w)e- (see idiom).[mansuetude etymology, mansuetude origin, 英语词源]