SLICKEN is a playable word

slicken Scrabble® Dictionary

verb
slickened, slickening, slickens
to make slick
107 Playable Words can be made from "SLICKEN"
   2-Letter Words (9 found)
   3-Letter Words (26 found)
   6-Letter Words (10 found)
   7-Letter Words (3 found)