ARISTA is a playable word

arista Scrabble® Dictionary

noun
pl. aristas or aristae
a bristlelike structure or appendage
(adjective) aristate
61 Playable Words can be made from "ARISTA"
   2-Letter Words (10 found)
   3-Letter Words (19 found)
   4-Letter Words (15 found)
   5-Letter Words (12 found)
   6-Letter Words (5 found)