Example : The gloomy forest.
The glooming interior of an old inn.
`gloomful' is archaic.

Synonyms : gloomful, glooming, sulky

Example : Gloomy at the thought of what he had to face.
Gloomy predictions.
A gloomy silence.
Took a grim view of the economy.
The darkening mood.
Lonely and blue in a strange city.
Depressed by the loss of his job.
A dispirited and resigned expression on her face.
Downcast after his defeat.
Feeling discouraged and downhearted.

Synonyms : blue, depressed, dispirited, down, down in the mouth, downcast, downhearted, grim, low, low-spirited

Example : A blue day.
The dark days of the war.
A week of rainy depressing weather.
A disconsolate winter landscape.
The first dismal dispiriting days of November.
A dark gloomy day.
Grim rainy weather.

Synonyms : blue, dark, dingy, disconsolate, dismal, drab, drear, dreary, grim, sorry