SMARTS is a playable word

smart Scrabble® Dictionary

adjective
smarter, smartest
characterized by mental acuity
(adjective) smartish
verb
smarted, smarting, smarts
to cause a sharp, stinging pain
44 Playable Words can be made from "SMARTS"
   2-Letter Words (6 found)
   3-Letter Words (15 found)
   4-Letter Words (15 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)