01 a. Not fallible; not capable of erring; entirely exempt from liability to mistake; unerring; inerrable.
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1.
Not fallible; not capable of erring; entirely exempt from liability to mistake; unerring; inerrable.
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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.
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3.
Incapable of error in defining doctrines touching faith or morals. See Papal infallibility, under Infallibility.(R. C. Ch.) See: Infallibility