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feIl seIf
parts of speech:
adjective, noun
part of speech: adjective
definition 1: protected against failure or breakdown, as by a compensatory or back-up mechanism that begins to function automatically in an emergency.
definition 2: of, pertaining to, or designating a system of military controls or precautions designed to activate and guide a response to an attack, esp. by air.
definition 3: having no chance of failing; infallible.
a fail-safe plan
part of speech: noun
definition 1: a mechanism that protects against or warns of failure in a device or system.
definition 2: a point at which a military operation, esp. a bomber attack or counterattack, must halt pending further instruction.