abyssus
n. C2 Proficiency abyssus
n. a very deep and dark place, like the bottom of the ocean. It is an old word that people used to describe something so dark you could not see the bottom.
n. a vast, dark, and bottomless chasm or abyss.
The ship sailed into the dark abyssus of the sea.
The explorer stood at the edge of the abyssus, staring into the black water below.
The poet used the image of the abyssus to represent the vast, unknowable depths of the human soul.
Borrowed from Latin abyssus.