Dictionary/同姓どうせいDousei同姓 (Dousei) is a Japanese noun meaning “same surname”.Meaningsnoun, adjectival nounsame surnameKanji in 同姓同same姓surnameRelated words同じsame一同all present同氏the said person同化assimilation同士fellow同僚coworker同級生classmate同意agreement同期same period同情sympathy同行accompanying (someone)同時にat the same time