BLACKER is a playable word

black Scrabble® Dictionary

adjective
blacker, blackest
being of the darkest color
verb
blacked, blacking, blacks
to make black
107 Playable Words can be made from "BLACKER"
   2-Letter Words (11 found)
   3-Letter Words (29 found)
   6-Letter Words (6 found)
   7-Letter Words (1 found)