Third-person singular simple present indicative form of fail

plural of fail

to not achieve a goal, or to go wrong

plural of epic fail

(Internet slang) Bad.

(Internet slang) Utter, total failure, especially where success should have been reasonably expected.

plural of failed state

(politics) A state that has failed to meet the basic conditions and responsibilities of a sovereign government; one that has lost physical control of its territory, the ability to provide public services, etc.

(military) In nuclear weapons strategy: encouraging deterrence by guaranteeing an immediate, automatic, and overwhelming response to an attack, even if the command-and-control infrastructure has been damaged by the enemy's first strike.

(computing) Able to proceed even after an error condition by selectively skipping parts of the processing.