U1N1D2E1R1S1I1G2N1
11 points
UNDERSIGN is validvalid
[v UNDERSIGNED, UNDERSIGNING, UNDERSIGNS]
to write one's name at the foot or end of, as a letter or any legal instrument [v -ED, -ING, -S]
[v UNDERSIGNED, UNDERSIGNING, UNDERSIGNS]
to write one's name at the foot or end of, as a letter or any legal instrument [v -ED, -ING, -S]