End of the world
Definitions
A really, really bad situation that feels like everything is falling apart and there's no hope left. It's not literally the planet exploding, but it feels like your world is ending.
Usage Examples
Losing my job felt like the end of the world at the time, but I got over it.
When their star player got injured, it felt like the end of the world for the team's fans.
For a kid, not getting the toy they wanted can feel like the end of the world.
The actual, literal end of the planet Earth, often involving fire, brimstone, and divine judgment. This is a religious concept.
Usage Examples
Some religions believe the end of the world will be preceded by a great battle between good and evil.
Movies often depict the end of the world as a result of a natural disaster or a zombie apocalypse.
The Book of Revelation describes the end of the world in vivid detail.