errancy

errancy
    n 1: (Christianity) holding views that disagree with accepted
         doctrine; especially disagreement with papal infallibility;
         "he denies the errancy of the Catholic Church"
    2: fallibility as indicated by erring or a tendency to err [ant:
       {inerrancy}]
    

Errancy \Er"ran*cy\, n. [L. errantia.]
   A wandering; state of being in error.
   [1913 Webster]
    

40 Moby Thesaurus words for "errancy":
      aberrancy, aberration, defectiveness, delusion, deviancy,
      distortion, errability, erroneousness, error, fallaciousness,
      fallacy, fallibility, falseness, falsity, fault, faultiness, flaw,
      flawedness, hamartia, heresy, heterodoxy, illusion,
      liability to error, misapplication, misconstruction, misdoing,
      misfeasance, misinterpretation, misjudgment, peccancy, perversion,
      self-contradiction, sin, sinfulness, unorthodoxy, untrueness,
      untruth, untruthfulness, wrong, wrongness