TARTER is a playable word

tart Scrabble® Dictionary

adjective
tarter, tartest
having a sharp, sour taste
verb
tarted, tarting, tarts
to dress up
41 Playable Words can be made from "TARTER"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (9 found)
   5-Letter Words (6 found)
   6-Letter Words (2 found)