consanguinity (n.)youdaoicibaDictYouDict[consanguinity 词源字典]
c. 1400, from Middle French consanguinité, from Latin consanguinitatem (nominative consanguinitas), from consanguineus "consanguineous, of the same blood," from com- "together" (see com-) + sanguineus "of blood" (see sanguine).[consanguinity etymology, consanguinity origin, 英语词源]