S1Y4N1D2A1C3T1Y4L1I1E1S1
21 points
SYNDACTYLIES is validvalid
SYNDACTYLY, fusion of adjacent digits [n]
SYNDACTYLY, the state of being syndactyl, with digits joined together [n]
SYNDACTYLY, fusion of adjacent digits [n]
SYNDACTYLY, the state of being syndactyl, with digits joined together [n]