Wordnet 3.0
NOUN (1)
1.
the quality of never making an error;
The Collaborative International Dictionary of English v.0.48:
Infallibility \In*fal`li*bil"i*ty\, n. [Cf. F.
infaillibilit['e].]
The quality or state of being infallible, or exempt from
error; inerrability.
[1913 Webster]
Infallibility is the highest perfection of the knowing
faculty. --Tillotson.
[1913 Webster]
Papal infallibility (R. C. Ch.), the dogma that the pope
can not, when acting in his official character of supreme
pontiff, err in defining a doctrine of Christian faith or
rule of morals, to be held by the church. This was decreed
by the Ecumenical Council at the Vatican, July 18, 1870.
[1913 Webster]
WordNet (r) 3.0 (2006):
infallibility
n 1: the quality of never making an error [ant: fallibility]
Moby Thesaurus II by Grady Ward, 1.0:
45 Moby Thesaurus words for "infallibility":
absolute certainty, absoluteness, assurance, assuredness,
certain knowledge, certainness, certainty, certitude, chastity,
dead certainty, defectlessness, definiteness, determinacy,
determinateness, faultlessness, finish, flawlessness,
immaculateness, impeccability, ineluctability, inerrability,
inerrancy, inevitability, infallibilism, necessity, nonambiguity,
noncontingency, perfection, positiveness, predestination,
predetermination, probatum, proved fact, purity, sinlessness,
spotlessness, stainlessness, sureness, surety, taintlessness,
truth, unambiguity, unequivocalness, univocity, unmistakableness