Darkness, dimness, or obscurity. / A depressing, despondent, or melancholic atmosphere. / Cloudiness or heaviness of mind; melancholy; aspect of sorrow; low spirits; dullness.

(intransitive) To be dark or gloomy. / (intransitive) To look or feel sad, sullen or despondent. / (transitive) To render gloomy or dark; to obscure; to darken.

plural of gloom

present participle of gloom

Twilight of morning or evening; the gloaming. / Gloomy behaviour; melancholy.

plural of glooming

simple past tense and past participle of gloom

(archaic or poetic) gloomy

(weather, US, Southern California) Any of several gloomy weather conditions present during June mornings, especially conditions of clouds, cool temperatures, fog, or drizzle.

Alternative form of doom and gloom