ATONIC is a playable word

atonic Scrabble® Dictionary

noun
pl. atonics
an unaccented syllable or word
59 Playable Words can be made from "ATONIC"
   2-Letter Words (12 found)
   3-Letter Words (19 found)
   4-Letter Words (17 found)
   5-Letter Words (8 found)
   6-Letter Words (3 found)