depressive, sepulchral, lugubrious, melancholy
Melancholy
lowering
no, the word gloomy already has the letter o in it. hope this helps!! :)
10 letter words with 3rd letter a:blackberryblackboardcharacterschastisingchatterboxclassroomscraftinessdraftinessdramatizedgraduatinggrasslandsheartachesheartthrobmeaningfultraumatize
Saturnine
Gloomy
Several words that mean "great sadness" that have the letter "o" in the middle are gloomy, morose and sorrowful. You could also use "despondent."
grose
Dumm!
I'm thinking...sad?
Dour
LOUR