Halflight is a word that describes an ambient light that is dim or half-lit. Its antonyms are words that describe complete darkness, brightness or full light. Some of the antonyms to halflight are darkness, gloominess, pitch darkness, blackness, and murkiness. On the other hand, the words for brightness include daylight, sunshine, glare, radiance, and brilliance. These antonyms are essential in describing the degree of light and the variations of illumination in different settings. For instance, in the context of a movie scene, the use of halflight can create a dramatic mood, while darkness can evoke a sense of fear or suspense.