SLEEKEST is a playable word

sleek Scrabble® Dictionary

adjective
sleeker, sleekest
smooth and glossy
verb
sleeked, sleeking, sleeks
to make sleek
75 Playable Words can be made from "SLEEKEST"
   2-Letter Words (4 found)
   3-Letter Words (17 found)
   6-Letter Words (7 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)