Gloom
/ɡlum/
noun
Darkness, dimness or obscurity.
“the gloom of a forest, or of midnight”
A melancholic, depressing or despondent atmosphere.
Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.
verb
To be dark or gloomy.
To look or feel sad, sullen or despondent.
To render gloomy or dark; to obscure; to darken.