S1U1N1D2O1W4N1I1N1G2
15 points
SUNDOWNING is validvalid
SUNDOWN, to experience nighttime confusion [v]
SUNDOWN, to arrive at a place to stay too late to do any work [v]
SUNDOWN, to experience nighttime confusion [v]
SUNDOWN, to arrive at a place to stay too late to do any work [v]