知ち友ゆうちゆうMeanings1nounclose friend; intimate friendA literary or somewhat old-fashioned term for a close friend. In modern Japanese, 親友 or 友人 are far more common.彼かれは私わたしの知ち友ゆうであり、長なが年ねんの付つき合あいだ。He is my close friend of many years.