'agnate' definitions:

Definition of 'agnate'

From: WordNet
adjective
Related on the father's side; "a paternal aunt" [syn: agnate, agnatic, paternal]
noun
One related on the father's side [syn: agnate, patrikin, patrilineal kin, patrisib, patrilineal sib]

Synonyms of 'agnate'

From: Moby Thesaurus