Word parts gloomy + -ness Pronunciation (UK) IPA (key): /ˈɡluːminəs/ (US) IPA (key): /ˈɡluminɛs/ Audio (US)(file) Noun Singular gloominess Plural none The gloominess of someone is how gloomy they are.Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads