SULLENER is a playable word

sullen Scrabble® Dictionary

adjective
sullener, sullenest
showing a brooding ill humor or resentment
(adverb) sullenly

97 Playable Words can be made from "SULLENER"

   2-Letter Words (9 found)

   3-Letter Words (25 found)

   6-Letter Words (7 found)

   7-Letter Words (2 found)

   8-Letter Words (1 found)