MYRIAD is a playable word

myriad Scrabble® Dictionary

noun
pl. myriads
a very large number
55 Playable Words can be made from "MYRIAD"
   2-Letter Words (11 found)
   3-Letter Words (24 found)
   4-Letter Words (15 found)
   5-Letter Words (4 found)
   6-Letter Words (1 found)