CYCLOIDS is a playable word

cycloid Scrabble® Dictionary

noun
pl. cycloids
a geometric curve
97 Playable Words can be made from "CYCLOIDS"
   2-Letter Words (12 found)
   3-Letter Words (23 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)