U1N1D2E1R1S1T1U1D2Y4
15 points
UNDERSTUDY is validvalid
[v UNDERSTUDIED, UNDERSTUDIES, UNDERSTUDYING]
to act another's part or take over another's duties [v UNDERSTUDIED, UNDERSTUDYING, UNDERSTUDIES]
[v UNDERSTUDIED, UNDERSTUDIES, UNDERSTUDYING]
to act another's part or take over another's duties [v UNDERSTUDIED, UNDERSTUDYING, UNDERSTUDIES]