NUMBEST is a playable word

numb Scrabble® Dictionary

adjective
number, numbest
lacking sensation
verb
numbed, numbing, numbs
to make numb
107 Playable Words can be made from "NUMBEST"
   2-Letter Words (14 found)
   5-Letter Words (12 found)
   6-Letter Words (3 found)
   7-Letter Words (1 found)