BITTERER is a playable word

bitter Scrabble® Dictionary

adjective
bitterer, bitterest
having a disagreeable taste
(adverb) bitterly
verb
bittered, bittering, bitters
to make bitter
59 Playable Words can be made from "BITTERER"
   2-Letter Words (8 found)
   3-Letter Words (16 found)
   4-Letter Words (15 found)
   5-Letter Words (11 found)
   6-Letter Words (8 found)
   8-Letter Words (1 found)