SOFTEST is a playable word

soft Scrabble® Dictionary

adjective
softer, softest
yielding readily to pressure
noun
pl. softs
a soft object or part
60 Playable Words can be made from "SOFTEST"
   2-Letter Words (10 found)
   3-Letter Words (17 found)
   5-Letter Words (9 found)
   6-Letter Words (1 found)
   7-Letter Words (1 found)