Answer:

drearier

AnswerCrossword Clue
DREARIERMore dispiriting
DREARIERLess upbeat
DREARIERMore depressing
DREARIERMore downbeat
DREARIERLess cheerful
DREARIERMore dismal
DREARIERMore boring
DREARIERMore like Poe's midnight
DREARIERMore cheerless
DREARIERMore gloomy