Tenebrific
Pronunciation : Ten`e*brif"ic
Part of Speech : a.
Etymology : [L. tenebrae darkness + facere to make.]
Definition : Defn: Rendering dark or gloomy; tenebrous; gloomy. It lightens, it brightens, The tenebrific scene. Burns. Where light Lay fitful in a tenebrific time. R. Browning.
Source : Webster's Unabridged Dictionary, 1913