[1] : The Collaborative International Dictionary of English v.0.48

infallible \infal"lible\, a. pref. in- not + fallible: cf. f.
   infallible.
   1913 webster
   1. not fallible; not capable of erring; entirely exempt from
      liability to mistake; unerring; inerrable. --dryden.
      1913 webster

   2. not liable to fail, deceive, or disappoint; indubitable;
      sure; certain; as, infallible evidence; infallible
      success; an infallible remedy.
      1913 webster

            to whom also he showed himself alive, after his
            passion, by many infallible proofs.   --acts i. 3.
      1913 webster

   3. r. c. ch. incapable of error in defining doctrines
      touching faith or morals. see papal infallibility, under
      infallibility.
      1913 webster
see also:
papal infallibility infallibility 

[2] : WordNet (r) 2.0

infallible
     adj : incapable of failure or error; "an infallible antidote"; "an
           infallible memmory"; "the catholic church considers the
           pope infallible"; "no doctor is infallible" ant: fallible
see also:
fallible 

[3] : Moby Thesaurus II by Grady Ward, 1.0

79 moby thesaurus words for "infallible":
   absolute, acceptable, agreeable, beyond all praise, certain,
   chaste, close, constant, correct, defectless, delicate, dependable,
   direct, effective, efficacious, efficient, even, exact, express,
   faithful, faultless, fine, flawless, foolproof, handy, helpful,
   ideal, immaculate, impeccable, indefectible, indefective,
   inerrable, inerrant, irreproachable, just right, mathematical,
   micrometrically precise, microscopic, nice, oracular, peerless,
   perfect, pinpoint, precise, pure, refined, reliable, religious,
   religiously exact, rigid, rigorous, satisfactory, satisfying,
   scientific, scientifically exact, secure, severe, sinless,
   spotless, square, stainless, strict, subtle, sure, surefire,
   taintless, unadulterated, unblemished, uncontaminated,
   undeceivable, undeviating, unerring, unfailing, unfaultable,
   unmistaken, unmixed, unspotted, untainted, useful

Infallible >> I Words
Infallible, definition of term: Infallible
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