故こ旧きゅう

noun

old acquaintance; old friend

Literary or formal term for a person one has known for a long time. In everyday speech, 昔の知り合い or 古い友人 are more common.

• 彼かれは父ちちの故こ旧きゅうで、戦せん前ぜんからの付つき合あいだそうだ。

  He is an old acquaintance of my father's, apparently going back to before the war.

• 故こ旧きゅうを訪たずねて故こ郷きょうへ戻もどった。

  I returned to my hometown to visit an old friend.