present participle of fail safe

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

simple past tense and past participle of female-fail

present participle of female-fail

present participle of male-fail

simple past tense and past participle of male-fail

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

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.

(idiomatic) Certainly; by all means; as a matter of importance

Inevitably.