Calignosity refers to darkness or dimness, but there are several antonyms for this word that describe the opposite of this condition. These antonyms include brightness, light, luminosity, and radiance. When something is bright, it is opposite to calignosity, and it can be easily seen even in low light conditions. Luminosity refers to the quality of being luminous or emitting light, while radiance implies a strong shine or glow. These antonyms point to the fact that the opposite of calignosity represents a state or condition characterized by light, vividness, and clarity.