consanguineous
Concise Oxford English Dictionary © 2008 Oxford University Press:
consanguineous /ˌkɒnsaŋˈgwɪnɪəs/
▶adjective relating to or denoting people descended from the same ancestor.
– derivatives
consanguine adjective,
consanguinity noun.
consanguine adjective,
consanguinity noun.
– origin C17: from L. consanguineus ‘of the same blood’ (from con- ‘together’ + sanguis ‘blood’) + -ous.
'consanguineous' also found in these Oxford entries:

