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Clean bill of health

The assurance that an animal or person is healthy.

The astronaut was given a clean bill of health before he began training.

Related Idioms

As clean as a hound’s tooth

Very clean. The classroom was as clean as a hound’s tooth when the students finished cleaning... Read more →

Clean slate

A record that shows no bad behavior or other problems from the past. The man started with a clean... Read more →