祖 おや founder N4 #543 Meanings also 親 noun founder; inventor ancestor; forefather そ noun ancestor; forefather; progenitor originator; pioneer; inventor; founder orig. meaning grandfather Its kanji 祖 ソ ancestor, pioneer, founder In sentences Furigana この先さき祖おや伝来でんらいの家宝かほうは君きみの物ものだ。 This heirloom shall be yours. #220840