Impeccable
Pronunciation : Im*pec"ca*ble
Part of Speech : a.
Etymology : [L. impeccabilis; pref. im- not + peccare to err, to sin: cf. F. impeccable.]
Definition : Defn: Not liable to sin; exempt from the possibility of doing wrong. -- n.
Defn: One who is impeccable; esp., one of a sect of Gnostic heretics who asserted their sinlessness. God is infallible, impeccable, and absolutely perfect. P. Skelton.
Source : Webster's Unabridged Dictionary, 1913