In a manner relating to or involving blood relationship; in terms of kinship or common descent.
From 'consanguineous' (adjective form) plus the adverbial suffix '-ly'; creates an adverb from the Latin-derived adjective about bloodlines.
This is a rarely-used adverb that shows how English can turn any adjective into an adverb with '-ly'—so while 'consanguineously' is technically a real word, you'd almost never hear it spoken because we usually just say 'by blood' instead!
Complete word intelligence in one call. Free tier — 50 lookups/day.