NEATEST is a playable word

neat Scrabble® Dictionary

adjective
neater, neatest
being in a state of cleanliness and order
noun
pl. neats
a bovine
105 Playable Words can be made from "NEATEST"
   2-Letter Words (11 found)
   3-Letter Words (28 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)