Tenebrous

ˈtɛnəbrəs

adjective

dark; shadowy or obscure

The word 'tenebrous' originates from the Latin word 'tenebrosus', meaning 'full of darkness'. It is often used to describe something that is dimly lit, mysterious, or dark and creates a sense of gloom or obscurity.

The wino's voice dropped; it became a confidential, tenebrous whisper.

King, Stephen

Apt Pupil

and about Nort, the weed-eater who had died and then been brought back to some sort of tenebrous life by the man in black.

Stephen King

The Waste Lands (The Dark Tower, Book 3)