COOLEST is a playable word

cool Scrabble® Dictionary

adjective
cooler, coolest
moderately cold
verb
cooled, cooling, cools
to make less warm

108 Playable Words can be made from "COOLEST"

   2-Letter Words (9 found)

   3-Letter Words (27 found)

   6-Letter Words (5 found)

   7-Letter Words (2 found)