RETEST is a playable word

retest Scrabble® Dictionary

verb
retested, retesting, retests
44 Playable Words can be made from "RETEST"
   2-Letter Words (5 found)
   3-Letter Words (12 found)
   4-Letter Words (14 found)
   5-Letter Words (9 found)
   6-Letter Words (4 found)