KITTLEST is a playable word

kittle Scrabble® Dictionary

adjective
kittler, kittlest
ticklish
verb
kittled, kittling, kittles
to tickle
93 Playable Words can be made from "KITTLEST"
   2-Letter Words (10 found)
   3-Letter Words (26 found)
   6-Letter Words (5 found)
   7-Letter Words (3 found)
   8-Letter Words (1 found)