SLOWDOWN is a playable word

slowdown Scrabble® Dictionary

noun
pl. slowdowns
a lessening of pace
74 Playable Words can be made from "SLOWDOWN"
   2-Letter Words (9 found)
   3-Letter Words (24 found)
   5-Letter Words (11 found)
   7-Letter Words (1 found)
   8-Letter Words (2 found)