COOLS is a playable word

cool Scrabble® Dictionary

adjective
cooler, coolest
moderately cold
verb
cooled, cooling, cools
to make less warm
17 Playable Words can be made from "COOLS"
   2-Letter Words (3 found)
   3-Letter Words (6 found)
   4-Letter Words (6 found)
   5-Letter Words (2 found)