EXACTEST is a playable word

exact Scrabble® Dictionary

adjective
exacter, exactest
precise
verb
exacted, exacting, exacts
to force the payment or yielding of
105 Playable Words can be made from "EXACTEST"
   2-Letter Words (9 found)
   3-Letter Words (29 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)
   8-Letter Words (1 found)