FIRMS is a playable word

firm Scrabble® Dictionary

adjective
firmer, firmest
unyielding to pressure
verb
firmed, firming, firms
to make firm
20 Playable Words can be made from "FIRMS"
   2-Letter Words (4 found)
   3-Letter Words (10 found)
   4-Letter Words (5 found)
   5-Letter Words (1 found)