1. Producing, consisting of, or resembling soot or smoke; sooty.
Usage: formal or literary
2. Obscure, murky, or gloomy in appearance or character.
Usage: formal or literary

Examples

• The factory's fuliginous emissions darkened the sky above the industrial district.
• A fuliginous haze hung over the city after the fire.
• The old chimney left fuliginous stains on the brick wall.
• His fuliginous mood made it difficult for others to approach him.
• The fuliginous clouds blocked out the afternoon sun.
• The painting depicted a fuliginous landscape of burnt forests.