SLYER is a playable word

sly Scrabble® Dictionary

adjective
slier, sliest or slyer, slyest
crafty
(adverb) slyly
23 Playable Words can be made from "SLYER"
   2-Letter Words (5 found)
   3-Letter Words (10 found)
   4-Letter Words (6 found)
   5-Letter Words (2 found)