SHIEST is a playable word

shy Scrabble® Dictionary

adjective
shier, shiest or shyer, shyest
timid
verb
shied, shying, shies
to move suddenly back or aside, as in fear
56 Playable Words can be made from "SHIEST"
   2-Letter Words (11 found)
   3-Letter Words (18 found)
   4-Letter Words (17 found)
   5-Letter Words (7 found)
   6-Letter Words (3 found)