consanguineous
adjective
con·san·guin·e·ous
ˌkän-ˌsan-ˈgwi-nē-əs
-ˌsaŋ-
: of the same blood or origin
specifically
: descended from the same ancestor
consanguineous brothers
consanguineously
adverb
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Merriam-Webster unabridged
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