亡ぼう友ゆうぼうゆうMeanings1noundeceased friendA somewhat formal or literary term for a friend who has passed away. Not used in casual conversation; more common in written contexts or solemn speech.彼かれは亡ぼう友ゆうの墓ぼ前ぜんに花はなを手た向むけた。He offered flowers at the grave of his deceased friend.