a deep void or gulf
abyss - gulf
The word ‘abyss’ can be used in either a literal or figurative way. Literally, it refers to a seemingly bottomless drop or hole in the ground. In a figurative sense, that meaning is adapted to express an unknown, frightening, or very dangerous situation.
Once at the top of the mountain, I walked to the edge and stared down into the gaping abyss. I was so high up that I could not see the bottom.
Things were very difficult for me personally and professionally last year. It felt at times like I was standing on the edge of an abyss and one false move could be catastrophic.
If lockdowns continue into next year, some analysts fear that the country might plummet into the abyss of economic ruin.