同どう姓せい同どう名めいMeaningsNounNo-adjective1. having the same family name and given name (as someone else)Kanji used同same姓surname名nameComposed of同どう姓せいsame surnameNoun同どう名めいsame name; homonymNounExamples1私わたしは自じ分ぶんと同どう姓せい同どう名めいの女じょ性せいを知しっている。I know a woman whose first and last names are the same as mine.