The term MORE GLOOMY can be broken down into four crossword solutions: DOURER (6 letters), DARKER (6 letters), DUSKIER (7 letters), and BLUER (5 letters). DOURER means to be more sullen or morose, while DARKER implies a greater degree of darkness. DUSKIER suggests a dimness or haziness, and BLUER implies a deeper shade of blue. All of these words together suggest a feeling of greater gloominess.