Source : Webster's Revised Unabridged Dictionary (1913)

Impeccability \Im*pec`ca*bil"i*ty\, n. [Cf. F.
   impeccabilit['e].]
   the quality of being impeccable; exemption from sin, error,
   or offense.

         Infallibility and impeccability are two of his
         attributes.                              --Pope.