tumble

to fall down quickly and without control ล้ม,ล้มลง,ตกลง,หกคะเมน

Millions of viewers around the world looked on as the Austrian jumper started tumbling chaotically for what seemed like a very long time before finally achieving the right position.

He hit the junction and his vehicle tumbled over and off the expressway.

There was high drama before the start when Sun tumbled into the water after a spectator blew a whistle when the swimmers were crouched down and just about to go.