Gloomy definition: dark or dim ; deeply shaded.. See examples of GLOOMY used in a sentence. GLOOMY definition: 1. unhappy and without hope: 2. not expecting or believing anything good in a situation: 3. dark…. Learn more. GLOOMY meaning : 1 : somewhat dark not bright or sunny; 2 : causing feelings of sadness not hopeful or promising ' gloomy ' - Complete English Word Reference Definitions of ' gloomy ' 1. If a place is gloomy , it is almost dark so that you cannot see very well. [...] 2. If people are gloomy , they are unhappy and have no hope.
