What is rendering dark or gloomy; tenebrous; gloomy. It lightens, it brightens, The tenebrific scene. Burns. Where light Lay fitful in a tenebrific time. R. Browning called?

tenebrific — Rendering dark or gloomy; tenebrous; gloomy. It lightens, it brightens, The tenebrific scene. Burns. Where light Lay fitful in a tenebrific time. R. Browning. (Webster's 1913.)