蹶stumbleStrokes19Onケツ, ケイKunたおれる, つまずくParts口mouth止stop厥thatWords with 蹶蹶然けつぜん · ketsuzenwith a spring; with alacrity; resolutely転蹶てんけつ · tenketsustumbling; tripping; failure困蹶こんけつ · konketsubeing in a difficult position; being in a tight cornerStudy it in Yanamino