Gloom, a word that describes a state of darkness, can be substituted with a string of synonyms to paint a more vivid image. Other words that are often used to describe gloom include murk, darkness, shadow, cloudiness, dimness, and somberness. Dismal, cheerless, and depressing are other synonyms that can be used to convey the same meaning. Words like melancholy, despondency, and sorrow all convey a sense of pain or sadness, while lugubriousness and mournfulness convey a sense of deep mourning. While there are many possible ways to describe gloom, each word conveys a slightly different nuance that can add depth and texture to your writing or conversation.