To be right as rain means feeling healthy, well, or completely fine again after being sick or having a problem. It is often used when someone quickly returns to normal.
The expression comes from the idea that rain is natural and dependable. In British English especially, it came to mean that something is exactly as it should be.
The expression comes from the idea that rain is natural and dependable. In British English especially, it came to mean that something is exactly as it should be.
After a good night's sleep, she felt right as rain.