over the hill—
1. past one’s prime; no longer young enough:
- As they say about boxers who are getting on in years, she is over the hill.
2. past the critical point; past the worst part of a difficult situation:
- According to experts’ analysis made over the last month, this crisis is “over the hill.” The U.S. unemployment rate has peaked at 10.0 percent.
over the hump— = over the hill 2:
- My aquarium is still in its early stages, but I think I am over the hump and on my way to a stable marine environment.