SMART 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
36 Playable Words can be made from "SMART"
   2-Letter Words (6 found)
   3-Letter Words (14 found)
   4-Letter Words (13 found)
   5-Letter Words (3 found)