ARENAS is a playable word

arena Scrabble® Dictionary

noun
pl. arenas
an enclosed area for contests
59 Playable Words can be made from "ARENAS"
   2-Letter Words (11 found)
   3-Letter Words (19 found)
   4-Letter Words (17 found)
   5-Letter Words (10 found)
   6-Letter Words (2 found)