THALLUS is a playable word

thallus Scrabble® Dictionary

noun
pl. thalluses or thalli
a plant body without true root, stem, or leaf
(adjective) thalloid
78 Playable Words can be made from "THALLUS"
   2-Letter Words (11 found)
   3-Letter Words (20 found)
   7-Letter Words (1 found)