SUBCOOLS is a playable word

subcool Scrabble® Dictionary

verb
subcooled, subcooling, subcools
to cool below the freezing point without solidification
68 Playable Words can be made from "SUBCOOLS"
   2-Letter Words (5 found)
   3-Letter Words (17 found)
   6-Letter Words (1 found)
   7-Letter Words (2 found)
   8-Letter Words (1 found)