S1L1U1S1H4Y4
12 points
SLUSHY is validvalid
resembling slush [adj SLUSHIER, SLUSHIEST] : SLUSHILY [adv], SLUSHINESS [n] / a confection consisting of flavored semisolid ice [n SLUSHIES]
resembling slush [adj SLUSHIER, SLUSHIEST, SLUSHILY] / an unskilled kitchen assistant [n SLUSHIES]