1. Imperfectly illuminated; dismal through obscurity or darkness; dusky; dim; clouded; as, the cavern was gloomy. Though hid in gloomiest shade.
2. Affected with, or expressing, gloom; melancholy; dejected; as, a gloomy temper or countenance.
Synonym: Dark, dim, dusky, dismal, cloudy, moody, sullen, morose, melancholy, sad, downcast, depressed, dejected, disheartened.
Origin: Gloomier; Gloomiest.