Category:Infallible

In*fal"li*ble, a. Etym: [Pref. in- not + fallible: cf. F. infallible.]

1. Not fallible; not capable of erring; entirely exempt from liability to mistake; unerring; inerrable. Dryden.

2. Not liable to fail, deceive, or disappoint; indubitable; sure; certain; as, infallible evidence; infallible success; an infallible remedy. To whom also he showed himself alive, after his passion, by many infallible proofs. Acts i. 3.

3. (R. C. Ch.)

Defn: Incapable of error in defining doctrines touching faith or morals. See Papal infallibility, under Infallibility.