OBSCUREST is a playable word

obscure Scrabble® Dictionary

adjective
obscurer, obscurest
dark or indistinct
verb
obscured, obscuring, obscures
to make obscure
412 Playable Words can be made from "OBSCUREST"
   2-Letter Words (14 found)
   8-Letter Words (5 found)
   9-Letter Words (2 found)