not a real father or a nature father (as distinct from foster father)
㸗【巳集中】【父部】 康熙筆画:10画,部外筆画:6画
《五音集韻》徒紅切,音同。父也。《正字通》从父从同。謂親之如父,與淮南假母義同。非生母故謂之假,非生父故謂之同。