WEBMar 27, 2024 · 矢. さ. Grade: 2. kun’yomi. From Old Japanese. Found in the Man'yōshū, completed some time after 759 CE. [3] Possibly cognate with Old Japanese -derived 幸 (sachi, “a hunting implement”) and Korean 살 (sal, “arrow”) . This reading does not appear to be used in modern Japanese.