Infallible
English Meaning
Not fallible; not capable of erring; entirely exempt from liability to mistake; unerring; inerrable.
- Incapable of erring: an infallible guide; an infallible source of information.
- Incapable of failing; certain: an infallible antidote; an infallible rule.
- Roman Catholic Church Incapable of error in expounding doctrine on faith or morals.