S1O1M3E1R1S1A1U1L1T1
12 points
SOMERSAULT is validvalid
[v SOMERSAULTED, SOMERSAULTING, SOMERSAULTS]
a leap in which a person turns his heels over his head and lights upon his feet [n -S] / to perform a somersault, also SOMERSET, SUMMERSAULT, SUMMERSET [v -ED, -ING, -S]