Definition of "fail-safe" in English

adjective

1. That does not cause undue damage in the event of failure.

   • The system is failsafe, because everything is backed up automatically.

2. Designed to shut off for safety if an emergency occurs.

noun

1. A device, mechanism or measure designed to make something fail-safe.

verb

1. To compensate automatically, in the event of a failure.

2. To make a device or mechanism fail-safe, or to add a fail-safe device or mechanism to an existing system.