Antonyms for "furnishes with light" would be words that indicate darkness or the absence of lighting. These could include: shades, shadows, eclipses, blackouts, gloominess, murkiness, and dimness. While "furnishes with light" implies brightness and illumination, these antonyms suggest the opposite, where light is scarce or completely absent. The opposite of furnishing with light can create an atmosphere of mystery, danger, or even uneasiness. The use of these antonyms can be effective in literary works like horror or suspense, where writers use them to create a specific mood or tone.