To compensate automatically, in the event of a failure. / To make a device or mechanism fail-safe, or to add a fail-safe device or mechanism to an existing system.

(computing) To automatically switch processing from a failed component in a critical system to its live spare or backup component.

Of a device: such that, if it fails, it does so in a way that will cause little or no harm to other devices and personnel.

simple past tense and past participle of fail at life

Third-person singular simple present indicative form of fail at life

(Internet slang) To be or become trapped in poverty, or in a situation where someone is not doing anything productive with their lives; to become a loser.

(UK, slang, derogatory) The Daily Mail newspaper.

Third-person singular simple present indicative form of fail-safe

plural of fail-safe

Alternative form of feal and divot