Ballet Term Soubresaut [soo-bruh-SOH]. Sudden spring or bound. A ballet springing jump from both feet usually performed traveling forward in either a croise or efface direction and landing on both feet. From demi-plie in the fifth position, spring into the air with crossed legs, extended knees and feet pointed. Dancer’s land simultaneously on both feet in demi-plie in the fifth position with the same foot in the front that started the jump. Note Russian School, the body inclines forward before the jump and then forcefully bends back at the height of the jump so that the legs are behind.