STAIRS is a playable word

stair Scrabble® Dictionary

noun
pl. stairs
a rest for the foot used in going from one level to another
62 Playable Words can be made from "STAIRS"
   2-Letter Words (9 found)
   3-Letter Words (20 found)
   4-Letter Words (17 found)
   5-Letter Words (13 found)
   6-Letter Words (3 found)