all clear

(noun) a signal or sign that everything is okay

Example Sentences:

I was just given the all clear to go to Europe.

The doctor gave him the all clear to start cycling again after he broke his leg last winter.

A: Are the police outside?

B: Nope, it’s all clear.

From the News:

Shuttle Discovery ‘all-clear‘ to land

Media:

Similar idioms:

1. break a leg
2. pull one’s leg
3. cost an arm and a leg