曽そう祖そ父ふMeaningsNoun1. great-grandfather; great-granddad; great-grandadOther readings曽祖父ひいじじ曽ひ祖父じじKanji used曽great (grandparent or grandchild)祖grandparent父fatherPitch accentそうそふComposed of曽そうgreat (i.e. great-grandson, great-grandmother)Prefix祖そ父ふgrandfatherNounExamples1曾そう祖そ父ふの代だいから東とう京きょうに住すんでいます。My family came to live in Tokyo in my great-grandfather's time.