MURKEST is a playable word

murk Scrabble® Dictionary

adjective
murker, murkest
dark
(adverb) murkly
noun
pl. murks
darkness
93 Playable Words can be made from "MURKEST"
   2-Letter Words (11 found)
   3-Letter Words (27 found)
   6-Letter Words (4 found)
   7-Letter Words (1 found)