APHTHA is a playable word

aphtha Scrabble® Dictionary

noun
pl. aphthae
a small blister in the mouth or stomach
(adjective) aphthous
23 Playable Words can be made from "APHTHA"
   2-Letter Words (6 found)
   3-Letter Words (10 found)
   4-Letter Words (6 found)
   6-Letter Words (1 found)