Stygian
Part of speech: adjective
Definition: Dark and gloomy. Infernal or hellish. Of, or relating to the river Styx.
Dark
Part of speech: noun
Definition: A complete or (more often) partial absence of light.Ignorance.Nightfall.
Part of speech: adjective
Definition: Having an absolute or (more often) relative lack of light.Dull or deeper in hue; not bright or light.Hidden, secretWithout moral or spiritual light; sinister, malign.Conducive to hopelessness; depressing or bleakLacking progress in science or the arts; said of a time periodWith emphasis placed on the unpleasant aspects of life; said of a work of fiction, a work of nonfiction presented in narrative form or a portion of either
Example sentence: Our posturings, our imagined self-importance, the delusion that we have some privileged position in the universe, are challenged by this point of pale light. Our planet is a lonely speck in the great enveloping cosmic dark.