DEADER is a playable word

dead Scrabble® Dictionary

adjective
deader, deadest
deprived of life
noun
pl. deads
the period of greatest intensity
37 Playable Words can be made from "DEADER"
   2-Letter Words (8 found)
   3-Letter Words (10 found)
   4-Letter Words (11 found)
   5-Letter Words (7 found)
   6-Letter Words (1 found)