きゅうち 旧知 JLPT N1 LinksSentence search for 旧知Sentence search for きゅうちKanji details for 旧 and 知Edit in JMdict Noun1. old friend; old acquaintance Jreibun 同僚と私はちちおや父親どうしがきゅうち旧知のあいだがら間柄で、子どもの頃からの知り合いだ。As our fathers are old friends, my colleague and I have known each other since childhood. Discussions Log in to talk about this word.