Tenebrousness refers to a state of darkness or obscurity. Synonyms for tenebrousness include murkiness, gloominess, dimness, opacity, shadowiness, obscurity, and dimness. These words all describe a lack of light or clarity. They can be used to describe physical darkness, such as a dimly lit room, or metaphorical darkness, such as a gloomy outlook on life. Additionally, synonyms for tenebrousness can describe a lack of understanding or knowledge, such as an obscure topic or a murky situation. Whether describing a physical or metaphorical state, using synonyms for tenebrousness can add depth and nuance to your writing.